Docomo SO-51A User manual

INSTRUCTION MANUAL

Introduction
Thank you for your purchase of "SO-51A".
For proper use of the SO-51A, read this manual
carefully before and while you use the SO-51A.
About manuals
●
"
クイックスタートガイド
(Quick Start Guide)"
(Supplied accessories)
Part names and functions are explained.
●
"Instruction Manual" application (Application of
the terminal) (in Japanese only)
Operations and settings of each function
are explained.
You can search by free word, open a setting
screen or launch an application from a displayed
page, etc. Use the terminal more conveniently with
this application.
[How to use]
From the Home screen, "apps folder"
u
"Instruction
Manual"
･
When using for the first time, download and install
the application according to the onscreen
instructions.
･
You can also call up "Instruction Manual"
application from "my daiz" (in Japanese only).
･
If you uninstall "Instruction Manual" application,
access Google Play from Play Store for installing it
again. From the Home screen, tap [Play Store],
search "
取扱説明書
(Instruction Manual)"
application to select, then operate it following the
onscreen instructions.
●
"Instruction Manual" (PDF file)
Operations and settings of each function are
explained.
It can be downloaded from NTT DOCOMO website.
❖
Note
･
Important information for SO-51A is posted in the
following website. Be sure to check before using.
https://www.sonymobile.co.jp/support/ (in Japanese
only)
Operation descriptions
In this manual, key icons (P.54) are described as ,
.
And operations for selecting icons or items in the key
operations on the screens are described as follows.
"Wi-Fi" no
tsukaikata
"Wi-Fi" wo
setsumeisho apuri
de shirabemasu.
Description Operation
Press and hold the
camera key for at
least 1 second.
Press and hold the camera key
on the side of the terminal for at
least 1 second.
From the Home
screen,
u
Tap
.
From the Home screen, tap ,
and then tap on the next
screen.
From the Home
screen, [apps
folder]
u
[Settings]
u
[Display].
From the Home screen, tap [apps
folder], and then tap "Settings"
on the next screen and "Display"
on the following screen.
Touch and hold an
icon.
Keep touching an icon longer (1-
2 seconds).

1
❖
Information
･
Please note that "SO-51A" is called as "the terminal"
in this manual.
･
In this manual, the description is written based on
the default state.
･
In this manual, the easier procedure is described for
the functions and settings which have multiple
operating procedures.
･
The terminal may have a software update of the
operating system (OS) for the purpose of quality
improvement or addition of functions. In that case,
operation procedure may change. For the
information about addition of functions or change of
operation procedure, refer to NTT DOCOMO website
And some applications that used in the previous OS
version may not be available or some unintended
bugs may occur.
･
In this manual, explanations for "docomo LIVE UX" set
as the home app are provided (P.72). If you set the
other home app, the operations may differ from the
descriptions.
･
In this manual, screens with "Black" wallpaper are
provided for explanation of "Xperia Home" home
app.
･
The contents of this manual and written URL are
subject to change without prior notice.
･
Screens and illustrations used in this manual are just
images for explanations and may be different from
the actual ones of the product.
･
Reproduction or reprint of all or part of this manual
without prior permission is prohibited.
･
SO-51A
･ クイックスタートガイド
(Quick Start Guide)
(in Japanese only)
･ ご利用にあたっての注意事項
(Notes on usage)
(In Japanese only)
･
3.5mm Earphone jack conversion/TV Antenna
cable SO01
You can check or purchase optional
accessories compatible with the terminal in
the DOCOMO online shop.
https://onlineshop.smt.docomo.ne.jp/
options/search.html (in Japanese only)
Supplied accessories

Contents
2
Contents
■
Supplied accessories. . . . . . . . . . . . . . . . . 1
Precautions . . . . . . . . . . . . . . . . . . 4
About using the terminal....................................................4
Recommended features......................................................7
Safety Precautions (Always follow these
directions) .....................................................................................8
Handling precautions.........................................................18
Waterproofness/Dustproofness...................................26
Before using the terminal . . . . 32
Part names and functions................................................32
docomo nano UIM card....................................................34
microSD card ...........................................................................36
FCC ID...........................................................................................39
Charging.....................................................................................39
Turning power on/off.........................................................43
Initial settings...........................................................................44
Security codes for the terminal ....................................46
Basic operations . . . . . . . . . . . . 49
Basic operations.....................................................................49
Character entry.......................................................................58
Notification LED .....................................................................64
Screen display and the icons .........................................64
Task manager...........................................................................69
Split screen................................................................................69
One-handed mode..............................................................70
Searching information in the terminal and
websites......................................................................................71
Home screen . . . . . . . . . . . . . . . . 72
Switching the home app................................................. 72
docomo LIVE UX.................................................................... 72
Xperia Home screen............................................................ 80
Simple Home screen .......................................................... 82
Application screen ............................................................... 86
Application list........................................................................ 89
Phone/Phonebook. . . . . . . . . . . 95
Making/Receiving a call.................................................... 95
Operations during a call ................................................ 100
Call history.............................................................................. 102
Call settings ........................................................................... 105
Phonebook ............................................................................ 110
Mail/Web browser . . . . . . . . . .115
docomo mail ........................................................................ 115
+Message ............................................................................... 115
Gmail.......................................................................................... 120
Early Warning "Area Mail".............................................. 121
Chrome .................................................................................... 124
Camera/Album . . . . . . . . . . . . .127
Camera ..................................................................................... 127
Using Cinema Pro.............................................................. 140
Album ....................................................................................... 142

3
Contents
Apps . . . . . . . . . . . . . . . . . . . . . . 145
d
メニュー
(dmenu)............................................................ 145
dmarket .................................................................................... 145
Play Store................................................................................. 146
Osaifu-Keitai........................................................................... 147
TV.................................................................................................. 151
Music.......................................................................................... 157
Location services ................................................................ 158
Schedule.................................................................................. 161
Clock........................................................................................... 163
docomo Data Copy .......................................................... 164
Settings . . . . . . . . . . . . . . . . . . . 167
Viewing the Settings menu ......................................... 167
Network & internet............................................................ 167
Device connection ............................................................ 178
Appearance ........................................................................... 179
Apps & notifications ......................................................... 179
Battery ....................................................................................... 183
Display....................................................................................... 184
Sound ........................................................................................ 187
Storage...................................................................................... 189
Lock screen & security..................................................... 190
docomo service/cloud.................................................... 196
Accounts.................................................................................. 197
Xperia Assist........................................................................... 198
Accessibility ........................................................................... 199
Digital Wellbeing................................................................ 200
Google ...................................................................................... 201
System....................................................................................... 201
File management . . . . . . . . . . 207
Storage structure................................................................ 207
File operations...................................................................... 207
Data communication. . . . . . . .209
Bluetooth function............................................................ 209
NFC communication ....................................................... 211
External device connection. .214
Connecting to PC .............................................................. 214
Connecting earphones or headphones .............. 215
International roaming . . . . . .216
Overview of International roaming (WORLD
WING) ........................................................................................ 216
Available overseas service ............................................ 216
Before using overseas ..................................................... 217
Making/Receiving a call in the country you stay
....................................................................................................... 220
International roaming settings.................................. 222
After returning to Japan ................................................ 224
Appendix . . . . . . . . . . . . . . . . . .225
Troubleshooting................................................................. 225
Software Update ................................................................ 234
Warranty and After Sales Services ........................... 238
あんしん遠隔サポート
(Anshin Enkaku Support)
....................................................................................................... 241
Main specification ............................................................. 243
Certificate and compliance ......................................... 246
End User Licence Agreement .................................... 247
Export Controls and Regulations ............................. 248
Intellectual Property Right ........................................... 248
SIM unlock.............................................................................. 251
Index . . . . . . . . . . . . . . . . . . . . . .252

4
Precautions
Precautions
･
The terminal supports LTE, W-CDMA, GSM/
GPRS and Wireless LAN Systems.
･
Because a terminal operates using radio
frequencies, it cannot be used inside a tunnel,
underground, in a building or other locations
where radio waves do not reach, in locations
with weak radio wave condition, or out of LTE/
FOMA service area. The services may not be
available on the upper floors of high-rise
apartments or buildings, even if there are no
obstructions around you. On occasion, your
calls may be disconnected even in areas with
strong radio wave condition, even if you are
not moving, or even if there are 4-signal icon
on the terminal's display.
･
Because the terminal uses radio waves to
communicate, it is possible that a third party
may attempt to tap your calls. However, the
LTE, W-CDMA, GSM/GPRS system
automatically scrambles all calls through a
private call feature. Therefore, even if the third
party successfully intercepts your call, they
will only hear noise.
･
The terminal operates on radio frequencies by
converting voice into digital signals. If a caller
moves into an area of poor radio wave condition,
the digital signal may not be restored accurately,
and the voice received in the call may differ
slightly from the actual voice.
･
The terminal supports the function which
allows "User" or "Guest" to use the terminal.
Therefore some services or applications
recognize them as the same user even after
the user is switched. DOCOMO shall have no
liabilities for any damage or troubles of
customer or a third party resulting from using
the function (P.205).
･
Note down the data saved to the terminal in a
separate note on a regular basis or save to an
external recording medium such as a microSD
card or PC. Note that DOCOMO assumes no
responsibility for any loss of saved data
resulting from malfunction, repair, changing
of the model or other handling of the
terminal.
･
As with PCs, some user-installed applications
or accessed websites may disrupt the stability
of the terminal performance, or unexpectedly
transmit information via the Internet causing
improper use of your location information as
well as personal information recorded on the
terminal. Therefore, verify the supplier and
operating conditions of the applications or
websites before using them.
About using the terminal

5
Precautions
･
The terminal automatically performs
communication for synchronizing data,
checking the latest software version, and
maintaining a connection with the server, and
for other purposes. If you transmit a large
amount of data, such as when downloading
applications or watching video, a packet
communication charge becomes high.
Subscription to Packet Pack/packet flat-rate
service is highly recommended.
･
Depending on the applications or service you
use, packet communication charge may be
applied even in Wi-Fi
®
communication.
･
If available memory in the microSD card or
the internal storage is low, running
applications may not operate correctly. In that
case, delete the saved data.
･
Set password etc. for screen lock to ensure the
security of your terminal in case of its loss
(P.191).
･
If your terminal is lost, change your each
account password to invalidate
authentication using a PC to prevent other
persons from using Google services such as
Gmail or Google Play, or SNS, etc.
･
For using services and applications provided
by the third party's including applications
provided by Google LLC., confirm the terms
and conditions, etc. specified by Google or
the providers. DOCOMO assumes no
responsibility for any malfunctions resulting
from the services and applications.
･
When a license agreement screen etc.
appears, follow the onscreen instructions.
･
Applications and service contents are subject
to change without prior notice.
･
The terminal supports only sp-mode, mopera
U and Business mopera Internet. Other
providers are not supported.
･
For details on usage charge, refer to NTT
DOCOMO website.
･
Display is manufactured by taking advantage
of highly advanced technology but some
dots may be always or never lit. Note that, this
shows characteristics of the display and not
defects in the terminals.
･
The terminal has an organic EL display.
Although an afterimage may occur when the
same image has been displayed for a long
time, it is not a malfunction. To prevent the
display from having afterimages, do not
display the same image for a long time.

6
Precautions
･
The screen may become partially dark or the
colors may be changed if you set the display
brightness to brighter than necessary or use
the terminal extremely for a long time. Also,
unevenness of colors or brightness, or
changes of colors may be found depending
on direction you are looking. That is because
of the structure of organic EL display, not a
malfunction.
･
DOCOMO is not liable to any failures or
malfunctions for commercially available
optional equipment.

7
Precautions
Cinema Pro
"Cinema Pro" feature, supervised by
Sony professional camera team, is
specialized for shooting videos. You can
enjoy the operational feeling like shooting
with a professional cinema camera, and its
imaging. Record of casual daily scenes can be
in cinematic impression.
→
P. 1 4 0
Multi-window
When you want to "post to SNS while seeing
a video" or "search for the Internet when
writing email", the Multi-window feature is
very useful.
The screen can be split in two windows and
you can operate applications individually in
each window. In the 21:9 ratio large screen of
the terminal, a lot of information can be
viewed and you can use the Multi-window
more comfortably.
Open the multi-window menu from the side
sense menu from in the Home screen.
→
P.53, P.69
Camera
Activate the camera from "Camera"
application icon, the Camera key on the
side of the terminal, or the Camera icon on
the lock screen. You can easily switch the
shooting modes between PHOTO and VIDEO
with simple operation, also call up various
features from the shooting modes.
→
P. 1 2 7
Side sense
It allows applications and settings to be displayed
in the area where your finger can reach.
Double-tap the side of the display (Side sense
recognition area) to display applications and quick
settings that are predicted to be used next.
It will be displayed in the position where you tap so
that the next operation can be performed
comfortably. You can also customize the items to
be displayed.
Slide it downward while viewing web pages to
perform back operation (return to the previous
screen), or double-tap it to perform the shutter
operation while using "Camera" application.
→
P.50
For details of the features, refer to the Xperia
™
website (https://www.sonymobile.co.jp/
myxperia/ (in Japanese only)).
Recommended features

8
Precautions
■
For safe and proper use of the terminal, please
read the "Safety Precautions" prior to use.
■
ALWAYS observe the safety precautions since
they intend to prevent personal injury or
property damage.
■
The following symbols indicate the different
levels of injury or damage that may result if
the guidelines are not observed and the
terminal is used improperly.
*1 Serious injury: This refers to loss of sight, injury,
burns (high- and low temperature), electric shock,
broken bones, injuries with residual aftereffects
from poisoning, etc., and injuries requiring hospital
admission for treatment or long-term hospital
attendance as an outpatient.
*2 Minor injury: This refers to injuries, burns (high- and
low-temperature), electric shock, etc. that do not
require hospital admission for treatment or long-
term hospital attendance as an outpatient.
*3 Property damage: This refers to extended damage
to buildings, furniture, livestock, pets, etc.
■
The following symbols indicate specific
directions.
Safety Precautions (Always
follow these directions)
Failure to
observe these
guidelines may
"immediately
result in death
or serious
injury
(*1)
".
Failure to
observe these
guidelines may
"result in death
or serious
injury
(*1)
".
Failure to
observe these
guidelines may
result in minor
injury
(*2)
and
property
damage
(*3)
.
DANGER
WARNING
CAUTION
Indicates prohibited actions.
Indicates not to disassemble.
Indicates not to use where it could get
wet.
Indicates not to handle with wet
hands.
Indicates compulsory actions in
accordance with instructions.
Indicates to remove the power plug
from the outlet.
Don’t
No disassembly
No liquids
No wet hands
Do
Unplug

9
Precautions
1. Handling the terminal, adapter,
docomo nano UIM card, and 3.5
mm earphone jack conversion/TV
antenna cable (common)
DANGER
Do not use, store or leave the equipment in
locations subject to high temperature or
accumulation of heat (e.g. by the fire, near a
heater, under a kotatsu or bedding, in direct
sunlight, in a car in the hot sun).
Doing so may cause fire, burns, injury, electric
shock, etc.
Do not put the equipment in or place near
microwave ovens, cooking appliances such
as IH cooking heaters, or high pressure
containers such as pressure cookers.
Doing so may cause fire, burns, injury, electric
shock, etc.
Do not splash sand, soil or mud, or do not
directly place the equipment on them. Also,
do not touch the equipment with hands
with sand etc. adhered.
Doing so may cause fire, burns, injury, electric
shock, etc.
For waterproofness/dustproofness, see the
following.
⇒
P.26 "Waterproofness/Dustproofness"
Do not charge the terminal when it is wet
with liquids such as water (drinking water,
sweat, seawater, urine of pet animals, etc.).
Also, do not charge the terminal in a place
where it possibly contacts water such as a
bathroom.
Doing so may cause fire, burns, injury, electric
shock, etc.
For waterproofness, see the following.
⇒
P.26 "Waterproofness/Dustproofness"
Do not subject the terminal to strong
pressure or break the terminal. Especially
when the terminal is in a pocket of clothes,
do not let it hit against surroundings or
being put between the objects.
Doing so may cause fire, burns, injury, etc.
because of damage of the internal battery.
* The following are examples that you should
be careful of:
・
Sitting or squatting with the terminal put in
a pocket of trousers or skirt
・
Catching an outer wear in the doors or the
door of car with the terminal put in the
pocket
・
Stepping on the terminal on a soft object
such as a sofa, bed, or bedding, or on a floor
Do not attempt to remove the internal
battery from the terminal.
Doing so may cause fire, burns, injury, electric
shock, etc.
Do not attempt to remove the back panel
from the terminal.
Doing so may cause fire, burns, injury, electric
shock, etc.
Don’t
Don’t
Don’t
Don’t
Don’t
Don’t
Don’t

10
Precautions
Do not disassemble or modify the
equipment.
Doing so may cause fire, burns, injury, electric
shock, etc.
Do not let the equipment get wet with
liquids such as water (drinking water, sweat,
seawater, urine of pet animals, etc.).
Doing so may cause fire, burns, injury, electric
shock, etc.
For waterproofness, see the following.
⇒
P.26 "Waterproofness/Dustproofness"
Do not allow liquids such as water (drinking
water, sweat, seawater, urine of pet animals,
etc.) to get inside of the charging jack or the
external connection jack.
Doing so may cause fire, burns, injury, electric
shock, etc.
For waterproofness, see the following.
⇒
P.26 "Waterproofness/Dustproofness"
Use optional devices specified by NTT
DOCOMO.
Using a device other than specified may cause
fire, burns, electric shock, etc.
WARNING
Do not subject the equipment to strong
force, impacts, or vibration such as letting it
fail, stomping or throwing it.
Doing so may cause fire, burns, injury, electric
shock, etc.
Do not allow conductive materials (such as
metal objects and pencil lead) to come into
contact with the charging jack or external
connection jack or dust to get inside it.
Doing so may cause fire, burns, injury, electric
shock, etc.
Do not cover or wrap the equipment with a
cloth or bedding in use or while charging.
Doing so may cause fire, burns, etc.
If charging does not finish after specified
time has elapsed, stop charging.
Failure to do so may cause fire, burns, injury,
etc. due to overcharge etc.
Power off the terminal before you step into a
place where flammable gas generates or a
place where dusts are generated. Stop
charging if you charge the battery.
May cause explosion, fire, etc. if the flammable
gas, etc. catches fire.
Follow the instructions of facility for use in a
gas station, etc.
Do not charge the battery in a gas station, etc.
Also, be careful not to drop the terminal when
using in a gas station, etc. Do not use it during
oil feeding.
May cause explosion, fire, etc. if the flammable
gas, etc. catches fire.
If you notice anything unusual about the
equipment such as an unusual odor,
abnormal noise, smoke generation,
overheating, discoloration or deformation
while using or charging, or during storage,
perform the following measures.
・
Remove a power plug from a power outlet
or accessory socket.
・
Power off the terminal.
Failure to do so may cause fire, burns, injury,
electric shock, etc. if you do not follow the
instructions above.
No disassembly
No liquids
No liquids
Do
Don’t
Don’t
Don’t
Do
Do
Do
Do

11
Precautions
CAUTION
Do not use damaged equipment.
Doing so may cause fire, burns, injury, etc.
Do not place on an unstable or inclined
platform. Be careful especially when vibrator
is set.
Doing so may cause the device to fall etc. and
cause injury.
Do not use or keep in a place that is very
humid, dusty, or subject to high
temperature.
Doing so may cause fire, burns, electric shock,
etc.
For waterproofness/dustproofness, see the
following.
⇒
P.26 "Waterproofness/Dustproofness"
If children use the terminal, parents or
guardians should give them the proper
instructions for use and do not allow them
to use the terminal in the wrong way.
Failure to do so may cause injury.
Keep the equipment out of the reach of
babies and infants.
Especially be careful with a storage location
for small parts such as the docomo nano
UIM card/microSD card tray
Doing so may cause accidental ingestion,
injury, electric shock etc.
Be careful when using the terminal
continuously for a long time or while
charging because the temperature of the
terminal may rise. Also, be careful not to
touch it unintentionally for a long time
when you put the terminal in a pocket of
clothes, you fall asleep, etc.
The terminal or adapter may become warm
when using applications, calling, performing
data communication, watching TV or video,
etc. for a long time or charging. If you are
directly in contact with warmed part for a long
time, it may cause a redness of skin, itch, rash,
low-temperature burn etc. depending on your
physical condition.
2. Handling the terminal
DANGER
Do not throw the terminal into fire or apply
heat.
Doing so may cause fire, burns, injury, etc.
Do not put excessive force such as sticking a
sharp object (nail, etc.) into the terminal,
hitting it with a hard object (hammer, etc.),
or stepping on it.
Doing so may cause fire, burns, injury, etc.
If the internal substance of the terminal
contacts your eyes or mouth, immediately
rinse your eyes or mouth with clean water
and see a doctor right away.
Failure to do so may cause blindness, medical
problem, etc. due to effects of the internal
substance of the terminal etc.
Don’t
Don’t
Don’t
Don’t
Don’t
Do
Don’t
Don’t
Do

12
Precautions
WARNING
Do not turn on or flash the flash/photo light
with the luminous part close to the other
people's eyes. Keep enough distance away
especially from babies and infants.
Doing so may cause blurred vision etc. Or it
may dazzle his/her eyes or scare him/her
causing an accident such as injury.
Do not turn on or flash the flash/photo light
toward a driver of a car etc.
Doing so may disturb driving and cause an
accident etc.
Do not watch a repeatedly-blinking screen
for a long time.
Doing so may cause cramp, loss of
consciousness, etc.
Do not allow water or other liquids (drinking
water, sweat, seawater, urine of pet animal,
etc.), or foreign substance such as a metal
parts (blade of cutter, staple, etc.) or
flammables to get in the docomo nano UIM
card/microSD card slot of the terminal.
Do not insert the docomo nano UIM card or
a microSD card into wrong slot, or insert it in
wrong orientation.
Doing so may cause fire, burns, injury, electric
shock, etc.
Do not expose the camera lens to direct
sunlight for an extended period.
Doing so may cause fire, burns, injury, etc. by
the light-collecting mechanism of the lens.
Power off the terminal or put it in Airplane
mode before boarding an airplane.
Use of mobile phones on board is restricted.
Follow the instructions of each airline.
The radio wave from the terminal may
adversely affect on-board electronic
equipment.
Prohibited acts related to mobile phone usage
on an airplane may be punished by law.
Follow the instructions of each medical
facility for the use of mobile phones on their
premises.
Power off the terminal in a place where the
use is prohibited.
The radio wave from the terminal may affect
electronic equipment and electronic medical
equipment.
Always keep the terminal away from your
ear when you talk with hands-free set, while
the ringtone is loudly sounding, or in stand-
by mode.
Also, when you play a game, play back a
video or music, etc. connecting the
earphone/microphone, etc. to the terminal,
adjust the volume adequately.
Loud sound is emitted from the terminal
when calling with hands-free set.
Even in standby mode, a ringtone or an alarm
sound may sound suddenly.
Listening to loud sound for long hours
continuously may cause a disability of ears
such as deafness.
Moreover, too loud sound makes you to barely
hear the surrounding sounds and may cause
an accident.
Don’t
Don’t
Don’t
Don’t
Don’t
Do
Do
Do

13
Precautions
If you have a weak heart, set the vibrator or
ringtone volume carefully.
Sudden vibration or ringtone sounding when
for incoming call astonishes you and it may
affect your heart.
If you wear any electronic medical
equipment, check with the relevant medical
electronic equipment manufacturer or
vendor whether the operation may be
affected by radio waves.
The radio waves from the terminal may affect
the electronic medical equipment.
Power off the terminal near electronic
devices or equipment operating on high
precision control or weak signals.
The radio wave from the terminal may
interfere with the operation of electronic
devices or equipment.
* The following are some electronic devices
or equipment that you should be careful of:
Hearing aids, implantable cardiac
pacemaker, implantable cardioverter
defibrillator, other electronic medical
equipment, and other automatically
controlled devices or equipment. If you use
an implantable cardiac pacemaker,
implantable cardioverter defibrillator, or
other electronic medical equipment, check
with the medical electronic equipment
manufacturer or vendor whether the
operation can be affected by radio waves.
Be careful about broken glasses or exposed
internal part of the terminal if the display,
back panel, or the camera lens is broken.
Touching damaged or exposed area may
cause burns, injury, electric shock, etc.
If the substance of the internal battery leaks
or gives off a strange smell, immediately
remove it from the vicinity of open flames.
The leaking liquid may ignite fire, catch fire,
explode etc.
Be careful not to allow a pet etc. to bite the
terminal.
Doing so may cause fire, burns, injury, etc.
because of damage of the internal battery.
CAUTION
When using the motion sensor, check the
safety around you, hold the terminal firmly,
and do not shake it unnecessarily.
Failure to do so may cause accident such as
injuries.
If the internal substance is leaked due to
damage of the display, do not allow it to
touch your skin such as face, hands, or cloths
etc.
Doing so may cause injury etc. on your eyes or
skin.
If the internal substance gets into your eyes,
mouth, etc. or contacts skin or clothes,
immediately rinse the contacted area with
clean water.
If the substance gets into your eyes, mouth,
etc. immediately see a doctor after rinsing.
Do not dispose of the terminal together with
usual trash.
Doing so may cause fire, burns, injury, etc.
Also, it may cause environmental destruction.
Bring the unnecessary terminal into a sales
outlet such as docomo Shop. If your local
municipality has a battery recycling program,
dispose of them as provided for.
Do
Do
Do
Do
Do
Do
Don’t
Don’t
Don’t

14
Precautions
If the substance leaks out from the internal
battery, do not make it contact with your
skin of face or hands, clothes, etc.
Doing so may cause injury etc. on your eyes or
skin.
If the internal substance gets into your eyes,
mouth, etc. or contacts skin or clothes,
immediately rinse the contacted area with
clean water.
If the substance gets into your eyes, mouth,
etc. immediately see a doctor after rinsing.
To use the terminal in car, check with
automobile manufacturer or dealer to
determine how the device is affected by
radio waves before using.
In rare cases, the radio wave from the terminal
may affect the vehicle's electronic equipment
in some vehicle models. In that case, stop
using the terminal immediately.
If abnormalities on skin are developed by
using the terminal, immediately stop using
and take medical treatment.
The use of the terminal may cause itching,
rashes, eczema, or other symptoms
depending on the your physical condition.
For material of each part, see the following.
⇒
P. 1 7 " M a t e r i a l l i s t "
Make sure not to get metal objects (blade of
cutter, staples, etc.) adhered because
magnetic parts are used on the earpiece/
speaker, speaker (lower left of the back side),
vibrator (lower right of the back side) of the
terminal.
Such adhered objects may cause injury etc.
Keep the equipment out of the reach of
children, people who needs to be
supervised, etc.
The terminal (including the supplied
accessories) contains magnets. If he or she
swallows the magnet, it may cause
suffocation, or serious symptom resulting from
hurt of bowel etc. When he or she swallowed
the magnet, consult a doctor immediately.
Do not let it close to medical device.
The magnets used for the terminal (including
the supplied accessories) may affect medical
devices such as a pacemaker, pressure variable
shunt for hydrocephalus curing, etc. Do not let
the terminal close to persons who use such
medical devices. If you are a user of such
medical device, consult your doctor before
using the terminal.
Watch the display in an adequately bright
place taking a certain distance from it.
Watching in a dark place or closely may
reduce visual acuity etc.
3. Handling the adapter
WARNING
Do not use the adapter cord if it gets
damaged.
Doing so may cause fire, burns, electric shock,
etc.
DC adapter is only for a negative ground
vehicle. Do not use DC adapter for a positive
ground vehicle.
Doing so may cause fire, burns, electric shock,
etc.
Don’t
Do
Do
Do
Do
Do
Do
Don’t
Don’t

15
Precautions
Do not touch the adapter if you hear
thunder.
Doing so may cause electric shock etc.
Do not short-circuit the charging jack while
it is connected to a power outlet or
accessory socket. Do not touch the charging
jack with your hands, fingers, or any part of
your body.
Doing so may cause fire, burns, electric shock,
etc.
Do not place heavy objects on the adapter
cord, or do not apply unnecessary force such
as pulling etc.
Doing so may cause fire, burns, electric shock,
etc.
When you insert/remove a plug of AC
adapter to/from power outlet, do not let it to
contact with metal objects.
Doing so may cause fire, burns, electric shock,
etc.
Do not connect the voltage converter for
overseas travel (travel converter) to the AC
adapter.
Doing so may cause ignition, overheating,
electric shock etc.
Do not put an excessive force to the
connection part with the adapter connected
to the terminal.
Doing so may cause fire, burns, injury, electric
shock, etc.
Do not touch the adapter cord, charging
jack or power plug with wet hands.
Doing so may cause fire, burns, electric shock,
etc.
Use the adapter only on the specified power
supply and voltage.
When charging the terminal overseas, use
AC adapter for global use.
Using the incorrect power supply and voltage
may cause fire, burns, electric shock, etc.
AC adapter : 100V AC (Make sure to connect
the adapter to a household AC power outlet.)
AC adapter for global use : 100V to 240V AC
(Make sure to connect the adapter to a
household AC power outlet.)
DC adapter : 12V or 24V DC (only for a
negative-ground vehicle)
When replacing a fuse in a DC adapter, make
sure to use the specified fuse.
Using a fuse other than specified may cause
fire, burns, electric shock, etc. For the specified
fuse, check a manual that comes with a DC
adapter.
Wipe dust off from the power plug.
Using it with dust adhered may cause fire,
burns, electric shock, etc.
When you connect the adapter or accessory
socket to a power outlet, insert it firmly.
Insecure inserting may cause fire, burns,
electric shock, etc.
When you disconnect the power plug from a
power outlet or accessory socket, do not
apply excessive force such as pulling the
cord of the adapter. Instead, hold the
adapter to disconnect.
Pulling the cord may damage the cord and
cause fire, burns, electric shock, etc.
Don’t
Don’t
Don’t
Don’t
Don’t
Don’t
No wet hands
Do
Do
Do
Do
Do

16
Precautions
When plugging/unplugging an adapter
into/from the terminal, plug/unplug the
adapter straight toward the jack without
applying excessive force such as pulling the
cord etc.
Incorrect plugging/unplugging may cause
fire, burns, injury, electric shock, etc.
If the charging terminal is deformed such as
being bent etc., stop using immediately. Do
not use it with the deformation restored.
Doing so may cause fire, burns, injury, etc. due
to short-circuit of charging terminal.
Always disconnect the power plug from a
power outlet or accessory socket when not
using it.
Keeping with connected to the power plug
may cause fire, burns, electric shock, etc.
Immediately remove the power plug from a
power outlet or accessory socket if liquid
such as water (drinking water, sweat,
seawater, urine of pet animals, etc.) is
adhered.
Failure to do so may cause fire, burns, injury,
etc. due to short-circuit from the adhered
substance.
Before cleaning, remove the power plug
from a power outlet or accessory socket.
Failure to do so may cause fire, burns, electric
shock, etc.
CAUTION
Do not touch the adapter successively when
it is connected to a power outlet or
accessory socket.
Doing so may cause a burn etc.
4. Handling the docomo nano UIM
card
CAUTION
Be careful of the cut surface not to hurt your
body parts such as fingers when handling
docomo nano UIM card.
The cut surface may be sharp and it may cause
injury etc.
5. Handling the terminal near
electronic medical equipment
WARNING
If you use an implantable cardiac pacemaker
or implantable cardioverter defibrillator,
keep the terminal 15 cm or more away from
the implant at all times.
The radio waves from the terminal may affect
the performance of electronic medical
equipment.
If you need to use electronic medical
equipment other than implantable cardiac
pacemaker or implantable cardioverter
defibrillator outside medical facilities when
treating at home etc., check with the
relevant medical electronic equipment
manufacturer whether the operation may
be affected by radio waves.
The radio waves from the terminal may affect
the performance of electronic medical
equipment.
Do
Do
Unplug
Unplug
Unplug
Don’t
Do
Do
Do

17
Precautions
When you get close to other people within
15 cm just like not having enough space to
turn around, set the radio wave of the
terminal to OFF beforehand (Airplane mode,
to Power off, etc.).
A person in close proximity may put on
implanted a medical electrical equipment
such as pacemakers and ICDs. The radio waves
from the terminal may affect the performance
of electronic medical equipment.
Follow the instructions of each medical
facility for the use of the terminal on their
premises.
The radio waves from the terminal may affect
the performance of electronic medical
equipment.
6. Material list
■
The terminal
Do
Do
Part Material Surface
treatment
Exterior case (top part,
bottom part, side part,
Power key/Screen lock
key, Volume key/Zoom
key, Camera key, cover
of docomo nano UIM
card/microSD card slot,
camera ring on the back
side)
Aluminum
alloy
Alumite
treatment
Exterior case (Antenna
slit, USB Type-C
™
jack)
PBT resin (with
glass fiber)
―
Transparent plate
(Display, back panel)
Hardened glass AFP
treatment
Transparent plate
(Camera lens)
Hardened glass AFP
treatment +
AR
treatment
Fingerprint sensor IC + epoxy
resin + high-
hardness film
(silicon
compound)
AFP
treatment
Earpiece/speaker
(upper) panel
Polyester resin Dyeing
Speaker (lower) panel Polycarbonate
resin +
polyester resin
Coating +
dyeing

18
Precautions
■
3.5mm Earphone jack conversion/TV
Antenna cable SO01
■
Common precautions
･
SO-51A is waterproof/dustproof;
however, do not allow liquids such as
water (drinking water, sweat, seawater,
urine of pet animals, etc.) or foreign
objects such as dust to enter inside of
the terminal or adhere to accessories or
optional devices.
The adapter, the docomo nano UIM card, and the
3.5mm Earphone jack conversion/TV Antenna
cable SO01 are not waterproof/dustproof. Do not
use in a highly humid place such as a bathroom
or in a place where it is exposed to the rain. Or
putting them on your body, humidity of sweat
may cause internal corrosion and malfunction.
Malfunctions which are determined to be caused
by water as result of inspections are not covered
by the warranty. For repairs, contact "Repairs
(Inquiries/Request)" on the last page (in Japanese
only) or DOCOMO-specified repair office.
･
Waterproofness/dustproofness may not
be maintained if the terminal has defect
in appearance such as damage or
deformation. In that case, contact
"Repairs (Inquiries/Request)" on the last
page (in Japanese only) or DOCOMO-
specified repair office.
･
Clean the terminal with a dry soft cloth
(such as used for cleaning eyeglasses).
- Rubbing roughly may scratch the display.
Rubber gasket of the
cover of docomo nano
UIM card/microSD card
slot
Silicon rubber
―
Inner side of cover of
docomo nano UIM
card/microSD card slot
Polycarbonate
resin +
elastomer resin
―
Tray of docomo nano
UIM card/tray of
microSD card
Polyacetal resin
―
Part Material Surface
treatment
Type-C plug (top
surface)
Polypropylene
resin (black)
―
Headset jack (top
surface)
Polyamide
resin (black)
―
Headset jack (body),
Type-C plug (body),
cable
Elastomer resin
(black)
―
Type-C plug (metal
part), Headset jack
(metal part)
Copper alloy Gold
plating
treatment
Type-C plug (metal
outer covered part)
Stainless steel Nickel
plating
treatment
Part Material Surface
treatment
Handling precautions