Chosen Solution
This is an odd predictament. Did a repair on an i5S, and now the vibrator motor is apparently not working. Not sure what to do, any ideas? Yeah, I saw another thread like this, but there didn’t seem to be any resolution
The bracket on the screen is probably bent slightly and preventing the vibrator from turning. I had that problem once. pop the screen up but leave it connected. Does the the vibrator turn? If so, then something is too close to it when you lay the screen down.