I just got this phone about a month ago and all seemed well until a couple days ago. When I use the Youtube App (and the Youtube App only), I notice when im scrolling through for a video to watch I get an occasional 'pop' sound. Also when pressing a video to play, just before it plays there is also a 'pop' sound. When using Youtube through safari this issue does not happen. I have an old iPhone 5s and tested the Youtube App on there and it's fine (no 'pop' sound) Is there any fix to this? Ive tried re-installing the app, restoring the iPhone, reset etc etc to no avail. The Youtube App on my iPhone 5s is probably an older version, is it possible to get an older version of an App and try that somehow?