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Poor calling
quality
Short
standby time
SIM card
error
mobile phone is first used, the PIN code on the
SIM card must be entered).
-
Enter the PUK code. Wrong inputting of the PIN
code will lock up your mobile phone, and you
should use the PUK code provided by the network
operator to launch it again.
-
Please check whether the volume has been
adjusted appropriately.
-
The mobile phone is used in the place with poor
signals, such as near a high-rise building or in a
basement, where radio waves can not effectively
reach.
-
The mobile phone is used in peak hours, for
example, the time to go to and leave work, and line
congestion makes it impossible to call.
-
The standby time is related to the system settings
of the network, and the mobile phone is possibly in
an area with poor signals. When it fails to receive
signals, the mobile phone will continuously
transmit to look for a base station, thereby
consuming a lot of battery power and leading to a
shorter standby time. Please move to a place with
strong signals or shut down the mobile phone for a
moment.
-
Replacing a new battery is needed.
-
The metal surface of the SIM card is contaminated.
Please clean the metal contact of the SIM card
with clean cloth.
61
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