I have a Samsung SCH720 (Vitality/Admire) The Admire is with Metro PCS and the Vitality is with Cricket. My cell phone is the Vitality with Cricket. HISTORY: This phone is 5 months old. Original battery. Original charger. Never been in water. Never abused. Do not play games or d/l music. Do not even use Facebook on the phone. Only apps that I downloaded are Yahoo Mail, Chase Bank, and Adv Task Killer. My problem is the phone cuts off and on all day long. Then when I try to charge it it says Battery not compatible with phone. This just started happening 2 weeks ago. Called Cricket - they said it was the phone, said call Samsung. Called Samsung they said send it to us and we will look at it. So have sent the old one to Samsung then went and purchased another phone (exact same) now this one is starting to cut off and on just like the other one. ANYONE HAVE ANY IDEAS? I am really frustrated.