143
Problem
Possible causes
Possible solution
In high-temperature
environments, battery
life will be shortened.
Avoid high
temperatures.
If you are not able to
connect to the
network, the phone will
continue to send out
signals as it attempts
to locate a base
station. Doing so will
shorten standby time.
Change your location
to one where the
network is accessible,
or select Flight mode.
Cannot
switch your
phone on
Battery power has
been depleted.
Recharge the phone’s
battery.
(U)SIM card
error
(U)SIM card malfunction
or damage.
Take the (U)SIM card
to your service
provider for testing.
(U)SIM card inserted
improperly.
Insert the (U)SIM card
properly.
Debris on the (U)SIM
card contacts.
Use a soft, dry cloth to
clean the (U)SIM card
contacts.