LG P725 User Manual page 257

Message
SD card not working
The screen does
not turn on when I
receive a call.
No sound
Hang up or freeze
Possible causes
FAT16, FAT32 file system
supported
Proximity sensor problem
Vibration mode
Intermittent software problem
Possible corrective measures
Check SD card file system via card reader, or
format SD card using the phone.
If 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.
Check the settings status of the sound menu
to make sure you are not in vibrate or silent
mode.
Remove and re-insert battery.
Turn on the phone.
Try to do a software update service via the
website.
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