HI MY IPHONE 4 16 GIG BLACK USED TO NON STOP VIBRATE THEN IT WOULD TURN ON BUT WITH ONLY DIM BACK LIGHT (ITUNES AND RESTORE COMPLETED) BUT STILL NO LUCK. TOOK IT TO SHOP NEW LCD DIDNT WORK BUT PHONE WAS ON. AND NOW IT WILL NOT CHARGE AND WHEN PLUGGED INTO MAINS IT JUST GETS HOT NO POWER LIFE. I TRIED RESTORES I TRIED DFU I TRIED HARD RESET I TRIED NEW BATTERY. NOTHING. AND WHEN IT DOES TURN ON JUST BLACK SCREEN WITH DIM BACK LIGHT. TRIED NEW USB AND CHARGER NOTHING... COULD IT BE THE CHARGING PORT ON THE IPHONE ?

has not come in contact with any water both indicators were clean white. inside and board look clean. was alot of dirt in the charging connector

thank you