How severely does Bluetooth pairing with an Apple Watch effect 6S battery life

Discussion in 'Apple Watch' started by ExcitedFutureWatchOwner, Jul 31, 2016.

  1. ExcitedFutureWatchOwner macrumors newbie

    Jul 30, 2016
    Currently my 6S is on 60% after a full day. With Bluetooth on 24/7 how does it compare ?
  2. Gav2k macrumors G3


    Jul 24, 2009
    Makes no massive difference that I have seen since owning an Apple Watch since launch
  3. macrumors 603

    May 26, 2016
    It's generally transferring data using Bluetooth LE so unless you're on call using your Apple Watch it's negligible.
  4. exxxviii macrumors 65816


    May 20, 2015
    Bluetooth has not been a material battery drain for any device for years.
  5. macrumors 603

    May 26, 2016
    Not true. There are various types of Bluetooth protocols. If you use A2DP profile then the battery drainage is pretty noticeable.
  6. exxxviii macrumors 65816


    May 20, 2015
    I was responding in he context of this thread, which is more in line with just having BT on and having it connected to the watch. In that context (and similar with any other device), BT does not have a material impact. Now, if you have a unique or specific application that is continuously transmitting high volumes of data, and the phone's CPU is busy repackaging those data for transmission, that would be different.
  7. dictoresno macrumors 601


    Apr 30, 2012
    has very minimal, if any, drain on my iPhone 6. i can go all day and the battery on my phone barely impacted just from being paired.
  8. daijholt macrumors 65816


    Jun 14, 2013
    Wales, UK
    As with other responses, you won't notice any drain on battery. I've had Apple Watch since launch day, and a pebble steel watch before that and neither has made any difference to my battery. Also bare in mind I've used several phones over the course of this period; a 5s, a 6, a 6 plus, a 6s and an SE. All perfectly fine with the Watch.

    My colleague has just got an Apple Watch and is under the placebo impression his battery has taken a nosedive...even though he's getting about 20 hours out of his 18 month old iPhone 6!

    Trust me, you'll be fine
  9. Relentless Power macrumors Penryn

    Relentless Power

    Jul 12, 2016
    Very little Drain out of my iPhone SE. Although my SE is newer and has a strong battery.
  10. BarracksSi Suspended


    Jul 14, 2015
    Additional battery drain to serve data to the watch? Dunno.

    But the only reason I'd turn the phone's Bluetooth off is if I'm not wearing the watch -- which means I'll be using the phone more frequently.

    I could rightly say that my iPhone battery usage goes UP when I don't have my Watch.
  11. BlueMoon63 macrumors 68020

    Mar 30, 2015
    Very little drain - especially if not activiely using. When I golf and use the workout app but have very little interaction with the phone for two hours, the battery didn't budge even 1% in two hours. Of course, a few of the betas were draining the iPhone battery pretty bad. Beta 4 seems very solid with the iPhone.
  12. JayLenochiniMac macrumors G5

    Nov 7, 2007
    New Sanfrakota
    It does drain a bit more, but like others said, it's minimal and it's counteracted by using your iPhone less, as you'll spend more time checking notifications on the AW and less time on iPhone.
  13. Exinor macrumors member

    Feb 9, 2010
    Overall, I've owned a 5s previously and now own a 6s+, and this may sound crazy, but I think having the AW actually improved both phones' batteries, somehow.
  14. jermy4 macrumors demi-god

    Jun 27, 2010
    It does because you're turning the iPhone screen on less since you are getting notifications on the watch instead.

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