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