I did all possible solution that i can find in this forum to keep my phone from shutting down. I did factory reset, update software, and repair software via xperia companion. I dont have much application running and still it shuts down after few minutes whether iom chatting, creating notes or just scrolling tru my phone. I dont have sim inserted now memory card so im sure that every thing i state before is the problem.
When i shuts down i tried to open it, most times it will tell me that my battery is drained or it will go to start up but will shutdown again. If i charge it, it will go back to the original percentage of battery before it shuts down. The only way i can use without ever shutting down is by plugging it on a poratable battery pack which is very inconvenient and bad for the battery... can anyone give me other solution.