LG LG-G420, Руководство пользователя

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Appendix 45
FAQ
This chapter lists some problems you might encounter when using
your phone. Some problems require you to call your service provider,
but most are easy to fix yourself.
Message Possible causes Possible corrective measures
SIM card 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
connection/
Dropped
network
Signal is weak or you
are outside the carrier
network.
Move toward a window or
into an open area. Check the
network operator coverage
map.
Operator applied new
services.
Check whether the SIM card
is more than 6~12 months
old. If so, change your SIM card
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.
If you forget the code, contact
your service provider.
The two codes you have
entered do not match.