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
Possible causes
There is no SIM card in
SIM error
the phone or it is inserted
incorrectly.
Signal is weak or you're
outside the carrier network.
No network
connection/
Losing
Operator applied new
network
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.
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