IPhone won't connect charge or connect to iTunes?

Well… I'm no amateur when it comes to iPhones but this problem really has me stumped. I bought this phone and replaced the screen, the person i bought it off of couldnt remember the passcode so its disabled. I've tried putting it in dfu mode, recovery mode, etc. Still nothing. If i turn it off and leave it plugged in itll charge. I also put in a new charging port because i thought that was the problem. So i can't do anything with this phone… Any ideas?

Perhaps because iphone's bottom, where you use to USB Cable, are dirty. Use duster spray to clean inside, also use spray to clean AC Charger Adapter With USB Cable as well. It should be trick. I did with mine, it is work better.

I would take it in to Apple.

Get a new charger and maybe it will fix the problem.

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