What Brand/model of phone??? You would normally find a better answer by searching for your brand/model as others "may be" having the same problem... Did your phone turn on and off in the same day or on different days?
Muffin-1, a phone that randomly shuts off would definitely have me concerned.Let's work to uncover why this is happening. Do you recall adding any new apps, games or software to the phone recently? Was there anything specific that you find you are doing on the phone when this happens? Which make and model phone do you have? LorenB_VZW If my response answered your question please click the _Correct Answer_ button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!