iPhone turns off as soon as I put the back cover on.
I work as a repair tech at a cell phone repair store. And this is something i've never seen as long as i've been working in the business.
An iPhone 4 CDMA came in for a screen and back cover replacement. So we did the repair and the phone worked fine. The customer came back in about a week later saying the phone wont turn on. It ONLY turns on when it's plugged in to the wall. So naturally I decide to swap the battery, and it still doesn't work. So I try more batteries, and none of them are working. I got fed up with putting the back on so many times I decided to try the rest of the batteries with the back off. The first battery worked, so I said OK. I went to go put the back on, and as soon as I put it on the phone died.
Then I took the back off and the phone powered up again, (powering it on with the button).
As soon as I put the back on, it works. As soon as I slide the back down into place, the iphone dies.
Also, with the phone back off and the phone working, it does all sorts of things. The battery percentage is extremely imprecise. Jumping from 32%, to 47%, and to 100%, and to 0%. I know it's not a battery issue as i've tried about 20 batteries. Does anyone think it could be the charge port? Or some kind of chip on the mobo that reads the battery's percentage?
I've never seen this before in my life and I need help, I can't find anyone else on the internet that this has happened to. I don't quite like having to refund people their money, and neither does my employer.