Hi

I've got the same problem with my iphone after replacing the display.

The replacement motor is working, I tested it with my second iphone 4

So, how i can get the vibrator work ? Thanks

hi i have the exact same problem. the top is chipped hence no vibration. isit the copper coil that makes a difference or is that the antenna ?

the copper coil that sits under the board and attached to the vibrate motor is mostly likely either damaged or placed at a weird angle where it wont make contact with the board.

I don't think it's to do with that small copper piece as mine isn't broken but i have exactly the same problem with the vibrator.

Also after the repair i first got problems with the home button and vibrator and now getting issues with signal.

Same problem here,

I'm beginning to think its because a small clip which is normally attached to the chasis is missing.

The same one that helps clip the cover plate (the one at the top which hides the LCD/JACK ect connectors) back down.

Without it your cover sits over the ribbon cable for the volume/silent switch ect, and might be causing damage?

hmmm....?

I'm having the same issue after replacing a broken digitizer. I tested the motor with a AA battery and confirmed that the motor works. I also tested the contacts on the motherboard using a multimeter and ibrate and got no response. I'm not sure if this a software issue or a hardware one. I'm fairly certain I didn't damage anything during the repair. Any suggestions?

Same exact problem after replacing proximity sensor cable. I also broke the copper coil...

It could help with a recovery to factory(wipe phone complete)