1. Chronoman's Avatar
    I have a Watch 3 LTE, but not LTE enabled yet, and I have an iPhone 6s, running the latest iOS. At the end of a normal day, my Watch is still well over 60% battery life remaining, sometimes better, so no complaints there.

    However, since getting the watch, the battery life on my iPhone has deteriorated substantially. Before the watch, it often had 75% battery left at the end of the day, now it is in the 30s or 40s.

    I realize that I had to upgrade the iOS, and did so, but am wondering whether the reduced battery life on the phone is because it is linked to the watch, or because of the new iOS?

    Any others with this problem?

    Anyone have any insight on what the cause is?
    11-30-2017 02:17 PM
  2. doogald's Avatar
    I don't know if it is from iOS 11 or more powered used by watch syncing, but, yes, since the iOS 11 upgrade, my 6s has had its battery drain significantly more than before. It was a night and day difference after the upgrade; doing a fresh install of iOS 11 did not help, by the way. I'm hoping that iOS 11.2 fixes some of that when it comes. I've had my Series 2 watch since January, so, for me, I didn't have both things happen at the same time. To me, this seems to be an iOS 11 issue.

    You can go to settings / battery on the iPhone (or just 3D press on the "Settings" icon on the home screen and choose battery) to get a list of which apps are consuming the most battery. For me, Safari is strangely often near the top, though I often use Safari less than a couple of minutes a day.
    11-30-2017 02:42 PM
  3. TripleOne's Avatar
    It could be iOS 11, or the battery itself.
    11-30-2017 09:27 PM

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