LG H955 User Guide

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Troubleshooting
Troubleshooting
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 or 
USIM card 
error
There is no SIM 
or USIM 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, 
must confirm 
the new code by 
re-entering it.
If you forget the code, contact your 
service provider.
The two codes 
you entered do 
not match.