LG UN272 - Manual (Page 114)

114 Troubleshooting
Symptom Possible causes Possible Corrective measures
Network
connection is
lost.
Signal too weak.
Reconnection to another service provider if
network mode is automatic.
Number not
permitted
The Faixed Dial Number function is
on.
Check the Settings menu and turn the function off.
Phone locked-
up and does not
function
Battery installing
Remove the battery and install it to restart your
phone again.
(similar to how you may restart your PC/computer).
Power Reset
In the case of a malfunction or lock up error, press
and hold for 8 seconds to reset the phone.