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Fail to turn on
the mobile
The power of
battery is used
up
Check the battery
power capacity or
recharge it
SIM
card
is
damaged
Contact with your
supplier
SIM is installed
incorrectly
。
Check
whether
SIM
card
is
installed correctly
SIM card error
There
is
feculency on the
metal surface of
SIM card
Wipe the metal
touch part of SIM
card with clean
cloth
Invalid SIM card Contact with your
supplier
Outside
the
coverage of
GSM service
Consult with the
network operator
Fail
to
connect
the
network
Weak signal
Move to a place of
strong signal and
try again
Fail to call
Have set call bar
function
Disactive call bar
function
Содержание ZT306
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