LG E400 User Manual

119
Message Possible causes Possible corrective measures
Codes do not 
matchTo 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 setNot supported by service 
provider or registration 
required.Contact your service provider.
Calls not 
availableDialling error 
New SIM card inserted. 
Pre-paid charge limit 
reached.New network not authorised.
Check...

120
Message Possible causes Possible corrective measures
Phone cannot 
be switched 
on
On/Off key pressed too briefly.
Battery is not charged. 
Battery contacts are dirty.Press the On/Off key down for at least two seconds.
Charge battery. Check charging indicator on the display.
Clean the battery contacts.
Charging 
errorBattery is not charged.
Outside temperature is too 
hot or cold.
Contact problem
No voltage
Charger defective
Wrong charger
Battery defectiveCharge battery.
Make sure phone is charging...

121
Message Possible causes Possible corrective measures
Number not 
permittedThe Fixed dialling number 
function is on.Check the Settings menu and turn the function off.
Impossible 
to receive / 
send SMS & 
pictureMemory full Delete some messages from the phone.
Files not 
openingUnsupported file format Check the file formats that can be supported.
SD card not 
workingFAT16, FAT32 file system 
supportedCheck SD card file system via card reader, or format SD 
card using the phone. 

122
Message Possible causes Possible corrective measures
The screen 
does not turn 
on when I 
receive a call.Proximity sensor problemIf you use any protection tape or case, check to see if it has 
covered the area around the proximity sensor. Make sure 
that the area around the proximity sensor is clean.
No sound Vibration modeCheck the settings status of the sound menu to make sure 
you are not in vibrate or silent mode.
Hang up or 
freezeIntermittent software 
problemRemove the battery, insert it...

123
Message Possible causes Possible corrective measures
Phone locked 
and does not 
function.Temporary software error1.Turn the phone off.
2.Remove the back cover.
3.Remove the battery and reinstall it.
4.Close the back cover.
5.Turn the phone on again.