Does anyone else get their display dimmed when using gps, browsing the internet or any other program? My display dims when browsing the internet for about 15 minuntes. I have my brightness set to about 60-70%. Also the back of the phone gets pretty hot. If the charger is plugged in it happens even faster and the phone gets way hotter. Is this normal or should I send it back? Bought from amazon. Oh yeah and Im also not running anything in background.