I phone stopped charging. Last night it wouldn't charge around 60 percent no matter what cable I used. Plug in and charge for 2 seconds. And then lightning symbol on battery widget went off. When I got the 15 percent warning it started charging and went to 100%. Or i f I turn it off it cahrges with the green light big battery symbol. But today it started the same thing. Went down to 35 percent and it started charging again. Something is wrong.