LG Electronics C660R No Sound, Manner mode, Silent mode, Remove and re-insert battery, Freeze

Message	Possible causes	Possible Corrective Measures
Files not open	Unsupported file	Check the file format that can be
	format	supported
SD Card not	FAT 16 file system	Check SD card file system via card reader
working	supported only	Or format SD card using phone
	Vibration or	Check the setting status of sound menu
No Sound		to make sure you are not in vibrate or
	manner mode
		silent mode.
		Remove and re-insert battery.
		Turn on the phone.
		If the phone is locked and does not work,
Hang up or	Intermittent	press and hold the Power/Lock key for
		10 seconds to turn it off. Then, press the
freeze	software problem
		Power/Lock key again for 3 seconds to
		reboot the phone.
		Try to do a software update service via
		the website.

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