Why does my Galaxy S3 keep rebooting every 20 seconds?

[AC Question]

galaxy s3 keeps rebooting every 20 seconds

it is either the on off switch or battery loose. seems to be aggravated by vibration.

 

[B. Diddy]

Re: galaxy s3 keeps rebooting every 20 seconds

Welcome to Android Central! It could be either, or the battery could be failing. Try a different or new battery.