My iPhone 4S is about eight months old (I think I got in November) and for the past week or so it won't charge unless I lay it on the floor with the cable sort of folded underneath it in a very specific position. I only have the one cable but I have changed the wall adapter to no avail. I am wondering if this sounds like a software problem, a hardware problem or a problem with the cable.
1) is my phone still under warranty?
2) does it sound like I need to replace the cable? I don't want to have to pay for it only to see that the problem is in fact with the phone itself
3) should I take my phone to the apple store to see if they can fix it? I don't want to do that if it's clearly a cake problem
4) what could have caused this problem? When I take my phone in or get a new charger I want to know how to avoid this mistake.
P.S there's no crack in the cable and I've never let my phone get wet
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