Chosen Solution
I replaced my iPhone 4 camera with my another iPhone 4 . After reassembling the phone , it did not turn on. I charged it but I hear clicking sound from my adapter , I think short circuit . But the adapter works fine with my 4s. The only mistake I have done is that I lost 2 screws of the email shield and the metal covering near the camera. Pls tell me a eolution
Check to make sure that all of the LCD and battery connections are good. Disconnecting the battery before the LCD cables is a good idea to prevent short circuiting. The ESD shield shouldn’t be a problem as long as you are able to screw down the four corners. If everything is connected properly try connecting it to the charger and holding down the Sleep/Wake button and the Home button for 15 seconds. If nothing happens then you may need to take it to a shop or upgrade.
Try removing the new camera. Does the problem persist?
