Posting this for my girlfriend. Ever since we updated her to iOS 8, her phone began intermittently refusing to auto rotate in all apps. Something was definitely wrong with the accelerometer as games that use the accelerometer would not respond at all to tilting the phone. She just got a brand spanking new iPhone 5s at the Apple Store today, all was well for a couple of hours then the problem came back exactly the same way. Again, this phone is BRAND NEW. I'm starting to think iOS 8 is the culprit here. Has anyone experienced the issue and if so, were you able to solve it?