Unitech EA520 User manual

EA520
Operating Instruction
Safety information
Safety specifications and usage instructions of mobile phone battery
Recommended usage items
·Before you use the battery, please read the instruction manual and the surface label of the battery carefully.
·Please use the battery in places away from the heat source and high voltage and do not allow children to play with
the battery. Do not beat the battery. Please remember that this battery can only be charged with the original
charger.
·Do not allow short circuit of the positive and negative poles of the battery and do not install or disassemble the
battery by yourself; do not let the battery get wet so as to avoid danger.
·If this battery is not used for a long time, please store it well and ensure that the battery is at half charge, neither
full nor running out.
Warning against danger
·Do not disassemble or install the battery
The protection mechanism and protection circuit inside the battery can help avoid danger. If it is not well
disassembled or installed, the production functions will be damaged, which may lead to the heating, smoking,
deformation or burning of the battery.
·Do not short-circuit the battery
Do not connect the positive and negative poles of the battery with metal and do not store or move the battery
together with metal. If the battery is short-circuited, a large current will flow through the battery, which will
damage the battery and lead to heating, smoking, deformation or burning of the battery.
·Avoid using the battery near power sources
Do not use the battery near fire or ovens as overheating will cause short circuit inside the battery and lead to
heating, smoking, deformation or burning of the battery.
·Use a special charger to charge the battery correctly
If you charge the battery with a non-dedicated charger, the battery may be dangerous. Charging under abnormal
conditions may result in loss of internal protection circuit functions of the battery and abnormal chemical reactions,
because of which, the battery may have the problems of heating, smoking, deformation or burning.
·Do not destroy battery
Do not use metal to damage the battery by chiseling into it, beating or throwing it or by any other means because
they may lead to heating, smoking, deformation or burning of the battery and cause danger.
·Do not use the battery in other devices
Improper operating conditions may reduce the battery performance and its service life and may even lead to
heating, smoking, deformation or burning of the battery
Warning
·Do not put the battery on the charger for long periods

Please stop charging the battery if the charger is still charging the battery after the normal charging time as
abnormal charging may lead to the heating, smoking, deformation or burning of the battery.
·Do not place the battery in microwave oven or other pressure vessels.
Transient heating or structural damage can lead to the heating, smoking, deformation or burning of the
battery.
·Battery with liquid leakage should not be placed near the fire
If the battery leaks (or smells), please keep it away from the fire source, otherwise, the leaking electrolyte
may catch fire or even cause other hazards.
·The headset should not give out too loud sounds
Please use the headset with caution because excessive sound may lead to hearing loss.
Matters needing attention
·When you use the battery in strong sunlight
Please do not use the battery in strong sunlight so as to avoid heating, smoking, deformation or burning,
which may lead to the degradation of battery performance and the reduction of its lifetime.
·Anti-static
The protective circuit inside the battery can help prevent all kinds of accidents. Please do not use the battery
in high-voltage electrostatic field because static electricity may damage the protection panel, which may lead to the
heating, smoking, deformation or burning of the battery.
·Instruction manual
Before you use the battery, please read the manual carefully and read it when necessary.
·Charging mode
Please use the recommended charging method to charge the battery in recommended ambient conditions with
a special charger.
·Working temperature of the equipment
-10 ℃to 55 ℃.
Use and maintenance of the mobile phone
Please use the mobile phone designed by excellent technology, with care. Please take the following
suggestions so that you can better use and maintain the mobile phone.
·Keep the mobile phone and all its parts out of reach of children.
·Do not place the mobile phone in a place with high temperature because high temperatures can shorten the life of
electronics, damage batteries, and even distort or melt some plastic parts.
·When the phone is moved from a place with low temperature to a place with normal temperature, please do not
put the phone in a low temperature place as moisture may occur inside which may damage the circuit board.
·Do not dismantle the mobile phone as improper handling by non-professionals may damage the device.
·Do not use irritant chemicals, cleaning solvents or corrosive cleaners to clean the phone. When you need to clean
your mobile phone, please gently wipe it with a cloth dampened with mild soapy water.
·Please use the accessories recommended by the manufacturer. Unauthorized accessories may damage the mobile
phone.
·If you carelessly make the mobile phone wet, please ensure that the mobile phone has dry before you use it again.
·Do not contact metal parts (except for specially configured charger port and data cable port) with the charger port
of the mobile phone so as to avoid short circuit.
Important Tips
Please observe the following precautions when using your mobile phone so as to avoid possible disasters or

legal penalties.
Pay attention to aviation safety
Do not use your mobile phone on the plane. As the navigation system on the plane may be interfered with by
mobile phones, many countries ban mobile phones from being used on planes.
Pay attention to the safety of the surrounding environments
Do not use mobile phones at gas stations and do not use them near oil storage plants, chemical plants and
places near flammable or explosive objects.
Pay attention to traffic safety
Please be careful enough when you drive cars and do not drive your car while making phones.
Be aware of radiation interference
When you use the mobile phone, please keep away from objects or devices which are easily disturbed. You
are recommended to keep the antenna at least 2.5cm away from your body when using your mobile phone.
Be aware of the interference to medical facilities
The usage of a mobile phone may cause interference to some medical devices. Most hospitals will prohibit
you from using your mobile phone.
Pay attention to the storage environment
Please keep the mobile phone away from magnetic devices, such as magnetic cards and floppy disks.
Radiation from the mobile phone will erase the information stored on the magnetic devices.
Warning
There is no self-repair content in the mobile phone. If the mobile phone is suspected to be damaged, please
send it to the designated service and maintenance center as soon as possible so that qualified technicians can repair
them. Do not disassemble the mobile phone by yourself; otherwise, it may suffer electric shock or other injuries.
Do not let young children access the mobile phone or its accessories. Improper operations of children may
damage the mobile phone or its accessories and may hurt the children or others. Meanwhile, detachable parts of
mobile phones, such as SIM cards and memory cards, may be swallowed by children, which is dangerous for
children.
When you use a mobile phone, please keep it away from high temperature and exposure of the sun. Keep it
in a dry and cool place.
Waterproofing precautions:
1. Before you do the waterproof test, all notches of the battery cover should be closed tightly, otherwise, it will not
be waterproof.
2. USB socket, headphone socket and charger seat of this machine are waterproof devices themselves. After the
waterproof test, the machine should be dried and placed for a period of time until the water in the headphone
socket, USB socket and charger seat dries up.
1.Introduction to the Mobile Phone
1.1 Insert and remove the SIM card
Close the mobile phone and uncover the upper right side cover of the mobile phone; insert the thimble into
the round hole inside the card slot and then take out the card holder. Place the SIM card flat on the groove of the
holder according to the shape of the holder and ensure that the flat area of the metal faces downward and that the

corner positions are the same with those of the card slot. Then, insert the card holder into the card slot. If you need
to take out SIM card, please close the machine first and then remove other external powers. Insert the thimble into
the round hole in the card slot and take out the card holder to remove the SIM card.
Tip: If mobile phone SIM does not support hot swap, you should not take out the SIM when the phone is on
standby state, otherwise, SIM card may be damaged.
1.2 Insert and take out the memory card
Close the mobile phone and uncover the upper right cover of the mobile phone. Insert the thimble into the
round hole inside the card slot and take out the card holder. Place the memory card flat on the card holder and
ensure that the flat area of the metal faces downward and that the corner positions are the same with those of the
card slot. Then, insert the card slot into the mobile phone.
Please close the phone before you take out the memory card and then take out the card holder according to the
above steps.
1.3 Remove and install the battery
The phone has a built-in battery.
Tip: The phone does not support manual disassembly of the battery.
1.3.1 Charge the battery
If the new battery is not fully charged, you need to install the battery and use up the electric quantity of the
battery before you use the mobile phone. Then, charge the battery according to the following method.
1. Insert the charger connector into the charger jack of the mobile phone.
2. Connect the charger with the power supply and the battery symbol will display dynamically, indicating
that the battery is being charged.
When the charging is completed, the symbol of full battery will be displayed, indicating the completion of
charging.
After the battery is fully charged, please remove the charger from the power supply and then pull the
charging head out of the mobile phone.
Tip: You can connect the USB data connection line with the computer to charger your mobile phone, copy
data and do other operations. USB version 2.0 is used. If the battery of your mobile phone has used up, you may
not be able to charge your mobile phone through a USB line. At that time, you need to charge your mobile phone
with a charger.
2. Basic Operations
2.1 Turn on/off mobile phone
Please long press the power button to turn on or off the mobile phone.
Tip: It takes the mobile phone some time to initialize the mobile phone, so please wait patiently.
If the mobile phone is started first, but the SIM card is not inserted, some functions of the mobile phone will
not be used normally. After the SIM card is inserted, the mobile phone will automatically check whether the
SIM card can be used.
2.2 Lock and unlock the screen
After the mobile phone is not used for a long time, its screen will go black and enter the locking state so as to save
some battery power.
Lock the screen/mobile phone:press the power button
Unlock the screen/mobile phone:press the power button to light the screen which shows the screen locking state.

Click Unlock and slide up to unlock the screen.
If you have set the locking pattern or the password, the screen will give you a hint to ask you draw the picture or
input the password.
Main menu→Setting→Security→Screen locking mode
Screen locking mode →Pattern locking
1. Screen locking→Pattern
2. Pay attention to the screen prompt and pattern examples and select next step twice.
3. Connect at least 4 points manually.
4. Select “Continue”
5. Draw the pattern and confirm it.
6. Select “Confirm”
After setting the unlocking pattern, the mobile phone will ask you to swipe upward to unlock the screen
each time you turn on the phone. Then, you should enter the unlocking pattern. If you want to set the mobile
phone to make it no longer require an unlocking pattern, please enter Settings → Security to change the
screen locking mode. After entering the unlocking pattern, please click “No”.
Set screen locking mode→password
1. Set screen locking mode→password
2. Input at least four character password
3. Select “Continue”
4. Input character password again and confirm it.
5. Select “Confirm”
After setting the password, the mobile phone will ask you to swipe upward to unlock the screen each
time you turn on the phone. Then, you should enter the password as required. If you want to set the mobile
phone to make it on longer require an unlocking password, please enter Settings → Security to change the
screen locking mode. After entering the password, please click “No”.
Tip: Please use the above steps to set the screen locking mode as PIN code.
Set screen unlocking mode→fingerprint
1. Set screen unlocking mode→fingerprint
2. Type in fingerprint and input at least 4-character password before you enter the fingerprint
3. Input fingerprint and finish the operation
After you set your fingerprint, you can unlock the screen using your fingerprint. You can also unlock
the screen by entering the password or pattern. If you want to delete the fingerprint, please go to Settings →
Security to delete the fingerprint locking setting.
2.3 Touch methods
You can use the following methods to operate your mobile phone accordingly. (Please click the corresponding
function key with your finger pulps.)
2.3.1 Click:
You can select an icon or option in the display screen by using the click function. For example, in the main
menu, you can click the information to enter and browse all SMS/MMS information.
2.3.2 Point:
You can check more menu options by holding on an item for several seconds. For example, when you click
and hold on a number in the contact details interface for several seconds, a pop-up menu will open, and you can

perform certain options on the menu.
2.3.3 Scroll:
Click in the scrollbar and drag up and down. For example, when browsing the contact list, a scrollbar will pop
up on the right side. You can drag the scrollbar to make it easier to find contacts.
2.3.4 Drag:
Click in a project with your finger and move it by dragging your finger.
2.3.5 Double click:
When scrolling through photos or webpages, you can quickly click twice with your finger to zoom in or out.
2.3.6 Fast swipe
Use the scrollbar to select contacts in the list, you can quickly swipe the touch screen.
When quickly swiping a long list of contacts, you can click screen to stop the swipe.
Friendly tips: In order to avoid scratching the touch screen, please do not use a sharp tool.
Do not access to other electronic equipment with the touch screen. Electrostatic discharge can cause the touch
screen failure.
In order to make better use of the touch screen, please remove the touch screen protective film before using
your mobile phone.
2.4 Check IMEI
1. Main menu→ Settings→ About mobile phone→ Status information
You can check your IMEI in the status information.
2. Enter “*#06#” on the dial pad to check the IMEI.
2.5 Main buttons

Button
Function
Home key
Return to the standby screen.
Task manager key
Enter the task manage.
Back key
Return to the previous screen.
Power on/off
Switch power on or off; Sleep/Wake; Long press for 10 seconds to
restart.
Volume keys
Adjust the phone volume and press the volume key on the camera
interface to take picture (No wake-up function).
2.6 Sleep and wake up the screen
1. You can put the screen to sleep to save battery, prevent accidental operation of mobile phone and clean
the screen by pressing the power button. And then pressing it again to wake up the screen.
2. If you need to adjust the time of mobile phone to automatically enter sleep state, please select
Settings→ Display→ Sleep/Wake.
2.7 Home screen
You can add shortcuts, widgets and other applications to customize the home screen according to your
requirements.
2.7.1 Add items to the home screen
You can customize the home screen by adding applications, widgets, folders and applications, and shortcut
keys for projects.

2.7.2 Move items on the home screen
1. Click the item you want to move.
2. Drag the item to the desired position after being selected.
2.7.3 Remove items from the home screen
1. Click the item you want to remove.
The item is selected and a delete icon appears in the upper area of   the screen.
2. Drag the item to the delete.
2.8 WLAN
Main menu→ Settings→ WLAN
·WLAN: Turn on or off WLAN.
·Network notification: Set the mobile phone to notify the user when an open network is available nearby.
·WLAN networks: Find wireless networks around you:
1. Select Settings→ WLAN
2. Select WLAN and turn it on. The mobile phone will scan for available WLAN networks, and then list
the network names found in the WLAN network list.
3. Click a network to connect.
4. If it is a protected network, the system will prompt you to enter your password. For specific details,
please consult the service provider or administrator of the network.
2.8.1 Delete WLAN networks
You can make the mobile phone not save the memorized WLAN network details.
1. Turn on the WLAN.
2. Click and hold the connected network name on the WLAN Settings screen.
3. In the opened WLAN dialog, click cancel the save.
2.9 Operating status of mobile phone
The network signal strength is
4G.
Download
The network signal strength is
3G.
The USB is connected.
GSM network is in use.
The battery is full.
The battery is being charged.
Silent mode
The signal strength of WLAN
Turn on portable WLAN hotspots.
The headset is plugged in.
Airplane mode
New messages
Alarm is set.

On the line
Missed calls
2.10 Notifications
There will be icons in the banners at the top of the home screen to notify new messages or E-mails, calendar
events, alarms, and ongoing events (such as current call status).
3. Dial
3.1 Dial pad:
Main menu→ Dial or Click dial button
3.1.1 Click the button to enter the phone number on the dial pad.
If you enter wrong number, click and you can delete numbers one by one. You can delete all number,
please long press .
If you make an international long-distance call, press and hold the 0 key and enter the international connection
code “+”.
3.1.2 Click the dial button below the dial pad, you can dial the number you enter.
3.2 End the call
Click or click end call button.
3.3 Answer the call and refuse the call
When you have an incoming call, the relevant information of the call will be displayed on the screen. If you have
missed calls, you will receive a notification.
In the incoming call interface, drag icon to the right icon, you can answer the call.
(When the screen is locked, drag the lock screen control to the right to answer).
Notice: You can press the headset button to answer the call after you plug the headphones into your phone.
In the incoming call interface, drag to the left , you can reject a call.
3.4 Refuse the call with messages
In the incoming call interface, drag and slide up to ，you can reject the call and send a
message to inform the reason for rejection.
3.5 Hold the call
In the process of the call, click the waiting icon .
3.6 Silence the call
In the process of the call, click the silent icon .

3.7 Switch between current calls
After connecting two calls, you can click the call interface to switch.
3.8 Call options
You can perform the following operations during a call:
1. Click HFP (Hands-free profile) and you can use mobile phone loudspeaker.
2. Click Bluetooth and you can use Bluetooth device.
Notice: Please make sure that your phone has been bound and established a connection with the Bluetooth
audio device before using this function.
3. Click dial pad and enter phone numbers.
4. Click the call adding and you can add a new call.
5. Click the call recording and you can record the call.
3.9 Call history
The call history contains all your outgoing calls, received calls or missed calls, etc.
Main menu→ Dial → Call history
1. Click the item you want and click “Call back” below to make a call.
2. Click the item you want and click “Details” below to view the detailed history about this number and
perform more operations.
3. Click the item you want and click “IP dial” to manually enter the number prefix and select any number to
directly dial by IP.
4. Click menu→ Clear call history and you can clear the list of call history.
3.10 Emergency call
Notice: Your network service provider has set up one or more emergency numbers. Different countries have
different emergency call numbers, so the emergency call number of your mobile phone will not be valid in all
regions. Sometimes due to the influence of the network, environment or interference events, emergency calls may
not be able to be dialed.
Main menu→ Dial（If your mobile phone is locked, you can click emergency call.）
1. Enter emergency call numbers.
2. Click the icon of dial and make an emergency call.
4. Address book
Create and manage a list of personal or company contacts stored in the mobile phone or on the SIM card. You
can perform some operations such as creating, deleting contacts and so on.
4.1 Create New Contacts
Main menu→ Address book. Click the icon in the lower right corner to create a new contact, and the new
contact pop box will pop up. You can select a phone or SIM card to create a contact.
After entering the names of contacts and editing the related information, please click finish.
4.2 Backup contacts
Main menu→ Address book→ Press the option menu in the upper right corner→ Import and Export→ Pop
up the import/export contact box, and you can select to export to storage device/SIM card and click export.
Notice: Backup contacts needs to install an expansion memory card in your mobile phone.
4.3 Edit and delete contacts
Main menu→ Address book