70
5IJTDIBQUFSMJTUTTPNFQSPCMFNTZPVNJHIUFODPVOUFSXIJMFVTJOH
ZPVSQIPOF4PNFQSPCMFNTSFRVJSFZPVUPDBMMZPVSTFSWJDFQSPWJEFS
CVUNPTUBSFFBTZUPGJYZPVSTFMG
Message
Possible causes
Possible corrective measures
SIM error
There is no SIM card in
the phone or it is inserted
incorrectly.
Make sure that the SIM card is
correctly inserted.
No network
DPOOFDUJPO
Losing
network
Signal is weak or you're
outside the carrier
network.
Operator applied new
services.
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.
Codes do
not match
To change a security
code, you will need to
confirm the new code by
re-entering it.
The two codes you have
entered do not match.
If you forget the code, contact
your service provider.
Any
application
cannot be
set
Not supported by service
provider or registration
required.
Contact your service provider.
Troubleshooting