Zte Z855 User Manual And Safety Information page 106

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Problem
Possible causes
The battery is depleted. In high
temperature environments,
battery life will be shortened.
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 consumes
battery power and will
consequently shorten standby
time.
Cannot turn
Battery power has been
your phone
depleted.
on
The nano-SIM card
malfunctions or is damaged.
nano-SIM
The nano-SIM card is inserted
card error
improperly.
There is debris on the
nano-SIM card contacts.
The nano-SIM card is invalid. Contact your service provider.
Unable to
You are not within the
connect to the
network‟s service area.
network
The signal is poor.
Possible solution
Contact the dealer to change a new battery.
Change your location to one where the
network is accessible, or temporarily turn
off your phone.
Recharge the phone‟s battery.
Take the nano-SIM card to your service
provider for testing.
Insert the nano-SIM card properly.
Use a soft, dry cloth to clean the nano-SIM
card contacts.
Check the service area with your service
provider.
Move to an open space, or if you are inside
a building, move closer to a window.
106

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