18
Problem
Ensure that...
The battery
cannot be
charged.
The charger is properly connected to
your phone and the power socket.
The phone
cannot be
powered on.
The battery power is sufficient.
The battery is properly installed.
Press and hold
for about 3
seconds.
You cannot make
a call except an
emergency call.
The phone number is correct.
You are in the network service area.
You have not enabled the call
restriction function.
Bad call quality.
The signal strength is strong enough.
If you are staying indoors, move
close to a window.
During a call, the
other side cannot
hear your voice.
The microphone is not covered.
If you use a wired headset, make
sure connector is fully plugged in.
The signal
strength is not
strong enough or
your phone is
often off line.
Move close to a place with strong signal
strength.
Summary of Contents for M570
Page 1: ...M570 ...
