Spooky!!! My phone (Samsung S4) charges without being plugged in...

[AC Question]

My phone (Samsung S4) charges without being plugged in and heats up... brand new Samsung battery. When the screen locks, it switches off. Help? Losing faith here...

 

[B. Diddy]

Welcome to Android Central! Do you see the lightning bolt appear in the battery icon when this happens, and does the battery level actually go up? Or is the battery just heating up?

Try wiping the cache partition: http://support.t-mobile.com/docs/DOC-5744