How to Hard Reset Ultraphone 506: Reset your device to factory condition. Go to Menu > Setting then select.. try with Hand/button reset: press Power and Volume..

How to Hard Reset Ultraphone 504: Reset your device to factory condition. Go to Menu > Setting then select.. try with Hand/button reset: press Power and Volume..

How to Hard Reset Ultraphone 503: Reset your device to factory condition. Go to Menu > Setting then select.. try with Hand/button reset: press Power and Volume..

How to Hard Reset Ultraphone 502: Reset your device to factory condition. Go to Menu > Setting then select.. try with Hand/button reset: press Power and Volume..

How to Hard Reset Ultraphone 501: Reset your device to factory condition. Go to Menu > Setting then select.. try with Hand/button reset: press Power and Volume..