I changed the battery connector in my iPhone 4, because it became broken when I was changing the home button. I got it reconnected and everything but my phone works and powers on (I can hear incoming calls and text but can't see anything and the digitizer is not recognizing my finger swipes) the back light works but the LCD is not coming on. I don't know if one of the pins in the battery connector powers the LCD or if I have damaged the LCD or ribbon its self. If anyone knows where and how the LCD gets its grounds and power from please let me know.