I have android phone of samsung, My phone was automatically shutting down several times, i thought my pocket is hitting power button or my battery is loose. But at evening it totally shutdown automatically and i put into charge in shut down mode once it was charged nearly to 100% but when i removed charger and hit power on button it didnot switch on. I again thought my battery is loosed so i tightened by sandwiching paper but it didnot work. After that it is still not switching on. How to make my phone on? Is my phone battery damaged or my power button is damaged help me??