LG UN272 - Manual (Page 112)

112 Troubleshooting
This section lists some problems that you might encounter while using your phone.
Some problems require that you call your service provider, but most of problems
you encounter are easy to correct yourself
Symptom Possible causes Possible Corrective measures
No connection
to the network
Signal is weak or you’re outside of
the carrier network.
Move to a window or open space. Check service
provider coverage map.
Codes do not
match
When you want to change a
security code you have to confirm
the new code by entering it again.
The two codes that you have
entered do not match.
Contact your Service Provider.