Troubleshooting
This chapter lists some problems you might encounter while using your phone. Some
problems require you to call your service provider, but most are easy to fix yourself.
Message
SIM error
No network
connection/
Losing network
152
Possible causes
There is no SIM card in the phone
or it is inserted incorrectly.
Signal is weak or you're outside
the carrier network.
Operator applied new services.
Possible corrective measures
Make sure that the SIM card is correctly
inserted.
Move towards a window or into an open area.
Check the network operator coverage map.
Check whether the SIM card is more than 6~12
months old. If so, change your SIM at your
network provider's nearest branch. Contact your
service provider.