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Problem Possible causes Possible solution
The signal is poor.
Move to an open space, or if
you are inside a building, move
closer to a window.
Cannot answer
incoming calls
You have activated the Call
barring feature.
Disable this feature. See Bar
Certain Calls.
Cannot make
outgoing calls
You have activated the Call
barring feature.
Disable this feature. See Bar
Certain Calls.
You have activated the Fixed
dialling numbers feature.
Disable this feature. See Use
Fixed Dialling Numbers.
PIN Code
blocked
You have entered an incorrect
PIN code three consecutive
times.
Contact your service provider. If
the service provider provides
the micro-SIM card’s PUK code,
use the PUK code to unlock the
micro-SIM card.
Phone crashes,
reboots, freeze,
or cannot be
powered on
Some third-party software is not
compatible with your phone.
Uninstall the software that may
cause the problem.
Upgrade the phone software.
Reset the phone to factory
status.
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