thanks for taking out time to read my problem..

I am the first owner of the device.and the device has never been overclocked or loaded with any new software, neither was physicaly damaged or submerged.

The only point that i would like to bring out here was..I went on a business trip to bangkok where somehow while charging i felt abnormal heating of the phone which damaged phone battery. ( and not sure if any other internal damage happened to the phone as well)
I replaced it with the new battery and flashed the software using flasher..
so i am suspecting this to be some kind of hardware fault...but when i install andriod to it .it works fine..

so i am confused if this is a harware issue or a software issue..
but definately for software i have reflashed the phone many a times.

please advise what could b wrong..?