HUMIDITY MAY BE PROBLEM!! Hi, I got blessed and discovered that humidity build up was stopping my phone from charging. I tried all of the cleaning tips. I kept my phone in an Otter Box and work in my yard, etc. and it's been humid, plus sticking phone in back pocket all lends to moisture build up. I put my phone in oven stripped of all extra coverings, tried my positional cable and it charged to a hundred %! Not bad;) Also, I eventually put the phone straight up so the heat from the pilot light could gently rise to dry inside of phone better. Good luck. I had nothing to lose. Theresa