Samsung SM-A908B User manual

www.samsung.com
USER MANUAL
English. 03/2021. Rev.1.0
SM-A908B

2
Table of Contents
Basics
5 Read me first
7 Device overheating situations and
solutions
10 Device layout and functions
14 Charging the battery
16 SIM or USIM card (nano-SIM card)
17 Memory card (microSD card)
19 Turning the device on and off
20 Initial setup
21 Fingerprint recognition
23 Face recognition
25 Camera
Apps and features
39 Introduction
40 Samsung account
41 Transferring data from your previous
device (Smart Switch)
43 Understanding the screen
51 Notification panel
53 Entering text
55 Installing or uninstalling apps
57 Phone
60 Contacts
62 Messages
64 Internet
65 Gallery
69 Multi window
72 Samsung Health
73 Samsung Notes
74 Samsung Members
74 Galaxy Shop
74 Samsung Global Goals
74 Galaxy Wearable
75 Calendar
76 Reminder
77 Voice Recorder
78 My Files
78 Clock
78 Calculator
79 Game Launcher
80 Game Booster
81 SmartThings
81 Smart View
82 Sharing content
84 Google apps
85 Bixby
87 Bixby Vision
88 Bixby Routines
90 AR Zone
94 Samsung Pay
96 Samsung Kids
97 Radio

Table of Contents
3
132 Privacy
132 Location
133 Accounts and backup
133 Samsung Cloud
134 Google
134 Advanced features
135 Motions and gestures
136 Dual Messenger
137 Digital Wellbeing and parental
controls
137 Battery and device care
137 Optimising your device
138 Battery
138 Storage
138 Memory
139 Device protection
139 Apps
139 General management
140 Accessibility
141 Software update
141 About phone
Appendix
143 Troubleshooting
148 Removing the battery
98 Music Share
100 Samsung DeX
106 Link to Windows
107 Screen capture and screen record
Settings
109 Introduction
110 Samsung account
110 Connections
111 Wi-Fi
113 Bluetooth
114 NFC and contactless payments
(NFC-enabled models)
115 Data saver
115 Mobile data only apps
116 Mobile Hotspot
116 More connection settings
118 Sounds and vibration
118 Sound quality and effects
119 Separate app sound
119 Notifications
120 Display
121 Changing the screen mode or
adjusting the display colour
122 Wallpaper
122 Themes
122 Home screen
123 Lock screen
123 Smart Lock
124 Always On Display
125 Biometrics and security
126 Samsung Pass
128 Secure Folder
131 Secure Wi-Fi

4
Basics

Basics
5
Read me first
Please read this manual before using the device to ensure safe and proper use.
•
Descriptions are based on the device’s default settings.
•
Some content may differ from your device depending on the region, service provider,
model specifications, or device’s software.
•
The device may require a connection to a Wi-Fi or mobile network when using some apps
or features.
•
Content (high quality content) that requires high CPU and RAM usage will affect the
overall performance of the device. Apps related to the content may not work properly
depending on the device’s specifications and the environment that it is used in.
•
Samsung is not liable for performance issues caused by apps supplied by providers other
than Samsung.
•
Samsung is not liable for performance issues or incompatibilities caused by edited
registry settings or modified operating system software. Attempting to customise the
operating system may cause the device or apps to work improperly.
•
Software, sound sources, wallpapers, images, and other media provided with this device
are licensed for limited use. Extracting and using these materials for commercial or other
purposes is an infringement of copyright laws. Users are entirely responsible for illegal
use of media.
•
You may incur additional charges for data services, such as messaging, uploading and
downloading, auto-syncing, or using location services depending on your data plan. For
large data transfers, it is recommended to use the Wi-Fi feature.
•
Default apps that come with the device are subject to updates and may no longer be
supported without prior notice. If you have questions about an app provided with
the device, contact a Samsung Service Centre. For user-installed apps, contact service
providers.
•
Modifying the device’s operating system or installing software from unofficial sources
may result in device malfunctions and data corruption or loss. These actions are violations
of your Samsung licence agreement and will void your warranty.
•
Depending on the region or service provider, a screen protector is attached for protection
during production and distribution. Damage to the attached screen protector is not
covered by the warranty.

Basics
6
•
You can see the touchscreen clearly even in strong outdoor sunlight by automatically
adjusting the contrast range based on the surrounding environment. Due to the nature
of the product, displaying fixed graphics for extended periods may result in afterimages
(screen burn-in) or ghosting.
–
It is recommended not to use fixed graphics on part or all of the touchscreen for
extended periods and turn off the touchscreen when not using the device.
–
You can set the touchscreen to turn off automatically when you are not using it.
Launch the
Settings app, tap Display
→
Screen timeout , and then select the length
of time you want the device to wait before turning off the touchscreen.
–
To set the touchscreen to automatically adjust its brightness based on the
surrounding environment, launch the
Settings app, tap Display , and then tap the
Adaptive brightness switch to activate it.
•
Depending on the region or model, some devices are required to receive approval from
the Federal Communications Commission (FCC).
If your device is approved by the FCC, you can view the FCC ID of the device. To view the
FCC ID, launch the
Settings app and tap About phone
→
Status information . If your
device does not have an FCC ID, it means that the device has not been authorised for sale
in the U.S. or its territories and may only be brought to the U.S. for the owner’s personal
use.
•
The use of mobile devices on aeroplanes or ships may be subject to federal and local
guidelines and restrictions. Check with the appropriate authorities and always follow
crew instructions regarding when and how you may use your device.
•
Depending on the region, you can view the regulatory information on the device. To
view the information, launch the
Settings app and tap About phone
→
Regulatory
information
.
•
Your device contains magnets. Keep a safe distance between your device and objects
that may be affected by magnets such as credit cards and implantable medical devices. If
you have an implantable medical device, consult your physician before use.
Instructional icons
Warning: situations that could cause injury to yourself or others
Caution: situations that could cause damage to your device or other equipment
Notice: notes, usage tips, or additional information

Basics
7
Device overheating situations and solutions
When the device heats up while charging the battery
While charging, the device and the charger may become hot. During wireless charging or fast
charging, the device may feel hotter to the touch. This does not affect the device’s lifespan or
performance and is in the device’s normal range of operation. If the battery becomes too hot,
the charging speed may decrease or the charger may stop charging.
Do the following when the device heats up:
•
Disconnect the charger from the device and close any running apps. Wait for the
device to cool down and then begin charging the device again.
•
If the lower part of the device overheats, it could be because the connected USB
cable is damaged. Replace the damaged USB cable with a new Samsung-approved
one.
•
When using a wireless charger, do not place foreign materials, such as metal objects,
magnets, and magnetic stripe cards, between the device and the wireless charger.
The wireless charging or fast charging feature is only available on supported models.
When the device heats up during use
When you use features or apps that require more power or use them for extended periods,
your device may temporarily heat up due to increased battery consumption. Close any
running apps and do not use the device for a while.
The following are examples of situations in which the device may overheat. Depending on
the functions and apps you use, these examples may not apply to your model.
•
During the initial setup after purchase or when restoring data
•
When downloading large files

Basics
8
•
When using apps that require more power or using apps for extended periods
–
When playing high-quality games for extended periods
–
When recording videos for extended periods
–
When streaming videos while using the maximum brightness setting
–
When connecting to a TV
•
While multitasking (or, when running many apps in the background)
–
When using Multi window
–
When updating or installing apps while recording videos
–
When downloading large files during a video call
–
When recording videos while using a navigation app
•
When using large amount of data for syncing with the cloud, email, or other accounts
•
When using a navigation app in a car while the device is placed in direct sunlight
•
When using the mobile hotspot and tethering feature
•
When using the device in areas with weak signals or no reception
•
When charging the battery with a damaged USB cable
•
When the device’s multipurpose jack is damaged or exposed to foreign materials, such as
liquid, dust, metal powder, and pencil lead
•
When you are roaming
Do the following when the device heats up:
•
Keep the device updated with the latest software.
•
Conflicts between running apps may cause the device to heat up. Restart the device.
•
Deactivate the Wi-Fi, GPS, and Bluetooth features when not using them.
•
Close apps that increase battery consumption or that run in the background when
not in use.
•
Delete unnecessary files or unused apps.
•
Decrease the screen brightness.
•
If the device overheats or feels hot for a prolonged period, do not use it for a while. If
the device continues to overheat, contact a Samsung Service Centre.

Basics
9
Precautions for device overheating
If you begin to feel uncomfortable due to the device overheating, stop using the device.
When the device heats up, the features and performance may be limited or the device may
turn off to cool down. The feature is only available on supported models.
•
If the device overheats and reaches a certain temperature, a warning message will appear
to prevent device failure, skin irritations and damages, and battery leakage. To lower the
device’s temperature, the screen brightness and the performance speed will be limited
and battery charging will stop. Running apps will be closed and all calling and other
features will be limited, except for emergency calls, until the device cools down.
•
If the second message appears due to a further increase of the device’s temperature, the
device will turn off. Do not use the device until the device’s temperature drops below the
specified level. If the second warning message appears during an emergency call, the call
will not be disconnected by a forced shut down.
Precautions for operating environment
Your device may heat up due to the environment in the following conditions. Use caution to
avoid shortening the battery’s lifespan, damaging the device, or causing a fire.
•
Do not store your device in very cold or very hot temperatures.
•
Do not expose your device to direct sunlight for extended periods.
•
Do not use or store your device for extended periods in very hot areas, such as inside a
car in the summertime.
•
Do not place the device in any areas that may overheat, such as on an electric heating
mat.
•
Do not store your device near or in heaters, microwaves, hot cooking equipment, or high
pressure containers.
•
Do not use a cable whose covering is peeled off or damaged, and do not use any charger
or battery that is damaged or malfunctioning.

Basics
10
Device layout and functions
Package contents
Refer to the quick start guide for package contents.
•
The items supplied with the device and any available accessories may vary
depending on the region or service provider.
•
The supplied items are designed only for this device and may not be compatible with
other devices.
•
Appearances and specifications are subject to change without prior notice.
•
You can purchase additional accessories from your local Samsung retailer. Make sure
they are compatible with the device before purchase.
•
Use only Samsung-approved accessories. Using unapproved accessories may cause
the performance problems and malfunctions that are not covered by the warranty.
•
Availability of all accessories is subject to change depending entirely on
manufacturing companies. For more information about available accessories, refer to
the Samsung website.
•
The supplied earphones (USB Type-C) which support digital output are designed
only for this device. They may not be compatible with other devices that use different
audio output method.

Basics
11
Device layout
Front camera
Speaker
Fingerprint recognition
sensor
Volume key
Touchscreen
Proximity/Light sensor
Earphone jack /
Multipurpose jack (USB
Type-C)
Side key
SIM card / Memory card
tray
NFC antenna
Rear camera
Flash
Microphone
Main antenna
Speaker Microphone
GPS antenna

Basics
12
•
When using the speakers, such as when playing media files or using speakerphone,
do not place the device close to your ears.
•
Be careful not to expose the camera lens to a strong light source, such as direct
sunlight. If the camera lens is exposed to a strong light source, such as direct sunlight,
the camera image sensor may be damaged. A damaged image sensor is irreparable
and will cause dots or spots in pictures.
•
If you use the device with its glass or acrylic body broken, there may be a risk of
injury. Use the device only after it has been repaired at a Samsung Service Centre.
•
If dust or foreign materials enter the microphone, speaker, or receiver, the device’s
sound may become quiet or certain features may not work. If you attempt to remove
the dust or foreign materials with a sharp object, the device may be damaged and its
appearance may be affected.
•
Connectivity problems and battery drain may occur in the following situations:
–
If you attach metallic stickers on the antenna area of the device
–
If you attach a device cover made with metallic material to the device
–
If you cover the device’s antenna area with your hands or other objects while
using certain features, such as calls or the mobile data connection
•
Using a Samsung-approved screen protector is recommended. Unapproved screen
protectors may cause the sensors to malfunction.
•
Do not cover the proximity/light sensor area with screen accessories, such as a screen
protector, stickers, or a cover. Doing so may cause the sensor to malfunction.
•
The light may flicker at the top of the device during calls due to proximity sensor
operation.
•
Do not allow water to contact the touchscreen. The touchscreen may malfunction in
humid conditions or when exposed to water.

Basics
13
Hard keys
Key Function
Side key
•
When the device is off, press and hold to turn it on.
•
Press to turn on or lock the screen.
•
Press and hold to start a conversation with Bixby. Refer to Using
Bixby for more information.
•
Press twice or press and hold to launch the app or feature you set.
Side key +
Volume Down key
•
Press simultaneously to capture a screenshot.
•
Press and hold simultaneously to turn off the device.
Setting the Side key
Select an app or feature to launch by pressing the Side key twice or pressing and holding the
Side key.
Launch the
Settings app, tap Advanced features
→
Side key , and then select an option you
want.
Soft buttons
Back button
Home button
Recents button
When you turn on the screen, the soft buttons will appear at the bottom of the screen. Refer
to Navigation bar (soft buttons) for more information.

Basics
14
Charging the battery
Charge the battery before using it for the first time or when it has been unused for extended
periods.
Use only Samsung-approved battery, charger, and cable specifically designed for your
device. Incompatible battery, charger, and cable can cause serious injuries or damage to
your device.
•
Connecting the charger improperly may cause serious damage to the device. Any
damage caused by misuse is not covered by the warranty.
•
Use only USB Type-C cable supplied with the device. The device may be damaged if
you use Micro USB cable.
To save energy, unplug the charger when not in use. The charger does not have a power
switch, so you must unplug the charger from the electric socket when not in use to
avoid wasting power. The charger should remain close to the electric socket and easily
accessible while charging.
Wired charging
Connect the USB cable to the USB power adaptor and plug the cable into the device’s
multipurpose jack to charge the battery. After fully charging, disconnect the charger from the
device.
Quick charging
Launch the Settings app, tap Battery and device care
→
Battery
→
More battery settings ,
and then tap the
Fast charging switch to activate it.
To use the fast charging feature, use a battery charger that supports Adaptive fast charging.
You can charge the battery more quickly while the device or its screen is turned off.

Basics
15
Reducing the battery consumption
Your device provides various options that help you conserve battery power.
•
Optimise the device using the device care feature.
•
When you are not using the device, turn off the screen by pressing the Side key.
•
Activate power saving mode.
•
Close unnecessary apps.
•
Deactivate the Bluetooth feature when not in use.
•
Deactivate auto-syncing of apps that need to be synced.
•
Decrease the backlight time.
•
Decrease the screen brightness.
Battery charging tips and precautions
•
If the battery is completely discharged, the device cannot be turned on immediately
when the charger is connected. Allow a depleted battery to charge for a few minutes
before turning on the device.
•
If you use multiple apps at once, network apps, or apps that need a connection to
another device, the battery will drain quickly. To avoid losing power during a data
transfer, always use these apps after fully charging the battery.
•
Using a power source other than the charger, such as a computer, may result in a slower
charging speed due to a lower electric current.
•
The device can be used while it is charging, but it may take longer to fully charge the
battery.
•
If the device receives an unstable power supply while charging, the touchscreen may not
function. If this happens, unplug the charger from the device.
•
While charging, the device and the charger may heat up. This is normal and should not
affect the device’s lifespan or performance. If the battery gets hotter than usual, the
charger may stop charging. If this occurs during wireless charging, disconnect the device
from the charger to let it cool down, then charge the device again later.
•
If you charge the device while the multipurpose jack is wet, the device may be damaged.
Thoroughly dry the multipurpose jack before charging the device.
•
If the device is not charging properly, take the device and the charger to a Samsung
Service Centre.

Basics
16
SIM or USIM card (nano-SIM card)
Insert the SIM or USIM card provided by the mobile telephone service provider.
Some services that require a network connection may not be available depending on
the service provider.
Installing the SIM or USIM card
21 43
1 Insert the ejection pin into the hole on the tray to loosen the tray.
2 Pull out the tray gently from the tray slot.
3 Place the SIM or USIM card on the tray with the gold-coloured contacts facing downwards
and gently press the SIM or USIM card into the tray to secure it.
4 Insert the tray back into the tray slot.
•
Use only a nano-SIM card.
•
Use caution not to lose or let others use the SIM or USIM card. Samsung is not
responsible for any damages or inconveniences caused by lost or stolen cards.
•
Ensure that the ejection pin is perpendicular to the hole. Otherwise, the device may
be damaged.
•
If the card is not fixed firmly into the tray, the SIM card may leave or fall out of the
tray.
•
If you insert the tray into your device while the tray is wet, your device may be
damaged. Always make sure the tray is dry.
•
Fully insert the tray into the tray slot to prevent liquid from entering your device.

Basics
17
Memory card (microSD card)
Installing a memory card
Your device’s memory card capacity may vary from other models and some memory cards
may not be compatible with your device depending on the memory card manufacturer and
type. To view your device’s maximum memory card capacity, refer to the Samsung website.
21 43
1 Insert the ejection pin into the hole on the tray to loosen the tray.
2 Pull out the tray gently from the tray slot.
3 Place a memory card on the tray with the gold-coloured contacts facing downwards and
gently press the memory card into the tray to secure it.
4 Insert the tray back into the tray slot.
•
Some memory cards may not be fully compatible with the device. Using an
incompatible card may damage the device or the memory card, or corrupt the data
stored in it.
•
Use caution to insert the memory card right-side up.
•
Ensure that the ejection pin is perpendicular to the hole. Otherwise, the device may
be damaged.
•
When you remove the tray from the device, the mobile data connection will be
disabled.
•
If the card is not fixed firmly into the tray, the memory card may leave or fall out of
the tray.
•
If you insert the tray into your device while the tray is wet, your device may be
damaged. Always make sure the tray is dry.
•
Fully insert the tray into the tray slot to prevent liquid from entering your device.

Basics
18
•
The device supports the FAT and the exFAT file systems for memory cards. When
inserting a card formatted in a different file system, the device will ask to reformat
the card or will not recognise the card. To use the memory card, you must format it. If
your device cannot format or recognise the memory card, contact the memory card
manufacturer or a Samsung Service Centre.
•
Frequent writing and erasing of data shortens the lifespan of memory cards.
•
When inserting a memory card into the device, the memory card’s file directory
appears in the
My Files
→
SD card folder.
Removing the memory card
Before removing the memory card, first unmount it for safe removal.
Launch the
Settings app and tap Battery and device care
→
Storage
→ →
Advanced
→
SD card
→
Unmount .
Do not remove external storage, such as a memory card or USB storage, while the
device is transferring or accessing information, or right after transferring data. Doing
so can cause data to be corrupted or lost or cause damage to the external storage or
device. Samsung is not responsible for losses, including loss of data, resulting from the
misuse of external storage devices.
Formatting the memory card
A memory card formatted on a computer may not be compatible with the device. Format the
memory card on the device.
Launch the
Settings app and tap Battery and device care
→
Storage
→ →
Advanced
→
SD card
→
Format .
Before formatting the memory card, remember to make backup copies of all important
data stored in the memory card. The manufacturer’s warranty does not cover loss of
data resulting from user actions.

Basics
19
Turning the device on and off
Follow all posted warnings and directions from authorised personnel in areas where the
use of wireless devices is restricted, such as aeroplanes and hospitals.
Side key
Volume Down key
Turning the device on
Press and hold the Side key for a few seconds to turn on the device.
Turning the device off
1 To turn off the device, press and hold the Side key and the Volume Down key
simultaneously. Alternatively, open the notification panel, swipe downwards, and then tap
.
2 Tap Power off .
To restart the device, tap
Restart .
You can set the device to turn off when you press and hold the Side key. Launch the
Settings app, tap Advanced features
→
Side key , and then tap Power off menu under
Press and hold .
Forcing restart
If your device is frozen and unresponsive, press and hold the Side key and the Volume Down
key simultaneously for more than 7 seconds to restart it.

Basics
20
Emergency mode
You can switch the device to emergency mode to reduce battery consumption. Some apps
and functions will be restricted. In emergency mode, you can make an emergency call, send
your current location information to others, sound an emergency alarm, and more.
To activate emergency mode, press and hold the Side key and the Volume Down key
simultaneously, and then tap
Emergency mode . Alternatively, open the notification panel,
swipe downwards, and then tap
→
Emergency mode .
To deactivate emergency mode, tap
→
Turn off Emergency mode .
The usage time left shows the time remaining before the battery power runs out. Usage
time left may vary depending on your device settings and operating conditions.
Initial setup
When you turn on your device for the first time or after performing a data reset, follow the
on-screen instructions to set up your device.
If you do not connect to a Wi-Fi network, you may not be able to set up some device
features during the initial setup.