Im on o2. So today for no reason (no app updates or anything recently) I noticed that my battery was dying quicker than normal when on 4G but doesn't die as quick on wifi. When I wasn't using the phone the battery life was as expected so wasn't a wakelock. It was only when using the phone and using data that the battery % went down a lot quicker than normal. A thought came to me that maybe the mast is having issues and draining more battery? Anyway I asked a few people where I work also on o2 and they noticed more battery drain today than usual. Interestingly there was also work on the mast where we both work yesterday.
So is it possible that the mast is faulty or having issues, and draining the battery more than normal? Signal is fine and doesn't drop but its odd that 5 of us have all noticed this today