49
50
9
Troubleshooting ..........................................
Before contacting the service center, you are advised to follow the instructions below:
• To have optimal operation, fully charge the battery.
• To improve the phone’s performance, remove unnecessary files or apps on your phone.
• To update your system software, use the
System update
command in your phone’s settings.
• To set your phone to factory default, use the
Reset
options
in the phone’s settings. All your phone data will
be lost permanently. It is strongly advised to fully back up your phone before resetting.
My phone can't be switched on
•
If the phone can't be switched on, charge for at least 10 minutes to ensure the minimum battery
power needed. Then switch it on again.
My phone has not responded for several minutes
•
If your phone doesn’t respond, turn off your phone by pressing and holding the
Power
key until it
turns off and then restart it again.
My phone turns off by itself
•
If your phone turns off by itself, make sure that the Power key is not accidentally pressed.
•
Check the battery charge level.
•
If it still doesn't work,
Factory
reset the phone via the Reset options in the phone’s Settings. Make
sure you have backed up your data.
My phone can't charge properly
•
Make sure that you are using the proper charger that comes with the phone.
•
Make sure that your battery is not completely discharged; if the battery power has been discharged
for a long time, it may take around 10 minutes to display the battery charging indicator on the screen.
•
Make sure that charging is carried out under normal conditions (0°C (32°F) to 55°C (131°F)).
•
When abroad, check that the voltage input is compatible.
•
Check that the charging port is secured or it’s not damaged.
My phone can't connect to a network or "No service" is displayed
•
Try connecting to the network by moving to another physical location.
•
Verify the network coverage in your current area.
•
Check that your SIM card is valid.
•
Make sure your phone’s setting is not in airplane mode.
•
If you are away from your T-Mobile network, you may need to enable roaming in the phone’s settings
to connect to another network. Roaming charges may apply.
My phone can't connect to the internet
•
Make sure that Cellular Data internet service is available in your wireless service plan.
•
Check your phone's settings. Make sure
Cellular Data
is enabled or Wi-Fi connected.
•
Make sure that you are in a place with network coverage for cellular data or Wi-Fi internet connection.
•
Try connecting at a later time or from another location.
Invalid SIM card
•
Make sure that the SIM card has been correctly inserted (see "Inserting Nano SIM card").
•
Make sure that the chip on your SIM card is not damaged.
•
Make sure that the service of your SIM card matches the network you’re on.
My phone can't make outgoing calls
•
Make sure that you have dialed a valid number and have touched Call on your phone.
•
For international calls, check the country and area codes.
•
Make sure that your phone is connected to a network, and the network is not overloaded or
unavailable.
•
Check your subscription status.
•
Make sure that you have not barred outgoing calls.
Summary of Contents for REVVL 5G
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