bought the phone on ebay. it's been rooted with freshevo 220.127.116.11 operating system. the camera app opens with no problem but the display screen is blank white. i can change the settings and even take pictures that show in my albums but i just can't see what i'm taking a picture of.... i later found that the same situation happens with viewing videos on youtube. blank white screen but i can hear the audio. i'm totally lost?????