Just got an iPhone 6S and I was playing with the new camera and noticed whenever I shot video or live photos, I could see the phone refocus every 1-2 seconds which is extremely annoying. I even tried manual focus before recording and it still does it. With AF lock on, it loses focus really quickly, even when recording non moving objects while holding the phone still. This is really annoying and I hope it isn't a hardware problem so all help is appreciated. Already tried factory reset (might as well while it's new before I have all my stuff on it). Also cleaned the camera lens in case fingerprints or dust was interfering.