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Message Possible Causes Possible Corrective Measures
The screen does
not turn on
when I receive
a call.
Proximity sensor problem
If you use any protection tape or case, check it is
covered the area around proximity sensor
Make sure that the area around the proximity
sensor is clean.
Hang up or
freeze
Intermittent software
problem
Take out the battery and insert battery.
Turn on the phone.
Try to do software update service via web site