Hello I bought a iPhone 6s plus over the weekend and I have 2 cases that when I put them on don't sit right on my phone. They hold the power button in and keeps trying to shut off the phone. Ones a lifeproof nuud case and the other is a tech 21 case I bought at the apple store. Not sure which one. The weird part is they fit and work perfectly on my aunts 6s plus. Any incite to what could be causing this would be greatly appreciated.