Zte -J G500 User Manual page 50

Problem
Short
standby time
Powering on
failure
UIM card
failure
Network
connection
failure
PIN code is
locked.
Possible Cause
The battery is not
connected well with
charger.
Standby time depends on
the setting by network
service provider, and
varies from provider to
provider.
Battery power is run out.
Network connection
failure
The battery power is run
out.
UIM card is failed or
damaged.
UIM card is not inserted
correctly.
The metal contacts of
UIM card are dirty.
Invalid UIM card
Out of network service
area
Weak signal
Input incorrect PIN code
three times
consecutively.
Solution
Connect again, and make
sure the cables are
connected correctly.
Power off the mobile phone.
Replace the battery.
Move to the area with
network, or power off the
mobile phone.
Charge the battery.
Return the UIM card to
network service provider to
test.
Insert the UIM card
correctly.
Clean the metal contacts
with soft and dry cloth.
Contact your network
service provider.
Contact your network
service provider for network
service area.
Move to an open area; if you
are in a room, move to the
area near windows.
Input PUK code to unlock the
PIN code, or contact your
network service provider.