Zte 840Z User Manual page 81

Problem
Shortened
standby time
You cannot switch
your phone on.
(U)SIM card error
Possible causes
• The standby time is related to your
service provider system configuration.
The same phone used with different
service providers' systems will not
provide exactly the same length of
standby time.
• 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.
Battery power has been depleted.
• (U)SIM card malfunction or damage. Take the (U)SIM card to your
• (U)SIM card inserted improperly.
• Debris on the (U)SIM card contacts. Use a soft, dry cloth to clean
Possible solution
If you are located in an area
where signaling is weak,
temporarily power off the
phone.
Use a new battery.
Change your location to one
where the network is
accessible, or temporarily turn
off your phone.
Recharge the phone's battery.
service provider for testing.
Insert the (U)SIM card properly.
the (U)SIM card contacts.
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