iPhone battery life with Apple watch

Discussion in 'Apple Watch' started by vikingjunior, Apr 12, 2015.

  1. vikingjunior macrumors 65816


    Aug 17, 2011
    Do you think the iPhone is going to have drastic battery drain being connected to a watch all day? I haven't heard any reviews on this.
  2. ethan028 macrumors 6502a


    Apr 4, 2009
    San Francisco, CA
    The iPhone and the Apple watch both are Bluetooth 4.0 LE so I don't think so.
  3. XmeX macrumors regular

    Sep 21, 2014
  4. ideal.dreams macrumors 68020


    Jul 19, 2010
    My iPhone 6 lasts me all day and then some, and that's connected to my Pebble smart watch (both normal and low energy Bluetooth connections) and periodically to my cars integrated Bluetooth when I drive.

    I think the phone will last fine. It's the watch I'm concerned about!
  5. ZombiePete macrumors 68020


    Aug 6, 2008
    San Antonio, TX
    The affect the Pebble had on my 6 Plus was negligible. I don't think the Apple Watch is going to be much different; it should be fine.
  6. Armen macrumors 604


    Apr 30, 2013
    It will be different. Your iphone 6+ (like mine) will have a even longer battery life with the Apple watch because we can actually reply to notifications from the watch without waking up our phones like we have to with the Pebble.
  7. BillyTrimble macrumors 6502a

    Sep 20, 2013
    I think no.
  8. Mathletics macrumors member


    Oct 18, 2014
    Orlando, FL
    I don't think it will be a drastic drain at all. In theory we will need to use the iPhone much less when paired with an apple watch, so hopefully that will make up for the extra battery that bluetooth requires.
  9. macduke macrumors 604


    Jun 27, 2007
    Central U.S.
    If the Apple Watch noticeably lowers the battery on the 6 Plus—well then RIP iPhone 6, 5S and 5 owners, lol.

    Seriously though, since it is new hardware, the software might need to work out some bugs. I could see it potentially getting "stuck" and causing increased battery drain, but probably rare. I've had that happen with brand new iPhones over the years. My iPhone 4 in particular would get stuck from time to time and I'd pull it out of my pocket and it would be really warm, almost hot. Rebooting would kill the loop and cool it down. But sometimes it would also drain quickly from continually looking for data connections when I was in an area of poor service. And I mean rather quickly—around 20% an hour in my pocket when it would get "stuck." Difficult to explain. Software updates seemed to fix it.
  10. Armen macrumors 604


    Apr 30, 2013
    I've had a Pebble watch paired with my 6+ for over 3 months and the battery impact has been non existent.
  11. DavidLynch macrumors 6502a

    Apr 9, 2015
    Like others have said, I've had my iPhone 6 (and a 5 before that) paired to a Pebble for over a year. The effect on the battery is negligible. Whatever drain it causes is negated by the decreased use from not checking my phone every time I get a notification.
  12. biosci macrumors 6502a

    Apr 16, 2010
    Chicagoland, IL
    Screen on time is the biggest draining source or factor for the iPhone. So, the Apple Watch paired with Bluetooth LE will not be such an issue as the iPhone screen will be off. That is my opinion/reasoning.
  13. XmeX macrumors regular

    Sep 21, 2014

    I use Bluetooth headset and yes the battery effected
  14. codeboye macrumors member

    Mar 12, 2011
    I'm expecting it to be a tad be better for me... I use a Pebble Steel and UP24, which having both of those devices connected all day I'm sure creates a bit of a drain, but probably not by much...
  15. parallax33 macrumors regular

    Mar 13, 2012
    Chandler's Ford, UK
    I think don't know
  16. daijholt, Apr 13, 2015
    Last edited: Apr 13, 2015

    daijholt macrumors 65816


    Jun 14, 2013
    Wales, UK
    Won't make any difference. I have my pebble steel connected to my iPhone 24/7 and it makes absolutely zero difference to how long the battery lasts (thanks to the beauty of Bluetooth LE)

    If anything, it'll improve your phones battery, because you can turn off "display on lock screen" for every notification and stop them lighting up your screen 1000 times a day for 5 seconds at a time.
  17. Mr.C macrumors 601

    Apr 3, 2011
    London, UK.
    Then you have a poor Bluetooth headset. I use both a Bluetooth headset and a Pebble and neither have had an significant or noticeable impact on my iPhone's battery.
  18. GmDude66 macrumors 6502

    Jul 29, 2010
    PA, USA
    Yes, Bluetooth 4.0 LE is VERY efficient. You probably won't even notice the extra drain.
  19. XmeX macrumors regular

    Sep 21, 2014

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