i have a problem with my phone ever since i bought it of someone one on craigslist it worked fine but then after 2 months the phone started acting up,just turned off one day,and when i turned the phone back on the touch screen lcd didnt work no more...everything else works good and all except the touch lcd screen wont..i was doing research and i found out could of been water damage..i checked the battery and yes the sticker its pink/red....but the sticker on the device by were the battery goes is still white..what should i do?? buy a new batterry or?? please someone help thank you