1. kris665's Avatar
    I have a year and a half old iPhone 6s that I am deciding on updating or staying on iOS 10.3.3. Will I notice a performance decrese? Or will it run mostly the same as iOS 10?
    01-22-2018 09:57 PM
  2. libra89's Avatar
    You will probably notice a performance decrease considering the age of your phone.
    kris665 likes this.
    01-22-2018 10:07 PM
  3. Ledsteplin's Avatar
    It might throttle the CPU a bit. But you still might prefer iOS 11 for the new features.
    kris665 likes this.
    01-22-2018 10:36 PM
  4. kris665's Avatar
    Thank you I was mainly thinking about updating it for wifi calling my carrier needs it to be on iOS 11. This is my first iPhone coming from Samsung and was worried about it slowing down like the galaxy phones did
    01-23-2018 12:08 AM
  5. pr1nce's Avatar
    iOS 11.2.2 runs great on my 6s. I didn’t really notice a performance difference going from iOS 10.3.3 to iOS 11. I prefer iOS 11.
    Just_Me_D likes this.
    01-23-2018 12:15 AM
  6. Just_Me_D's Avatar
    iOS 11.2.2 runs great on my 6s. I didn’t really notice a performance difference going from iOS 10.3.3 to iOS 11. I prefer iOS 11.
    This is what I suspect and thank you for confirming. With that being said, I recommend the OP update to the latest iOS version, if only for security purposes.
    kataran likes this.
    01-23-2018 08:21 AM
  7. doogald's Avatar
    There was a barely noticeable difference between iOS 11 and iOS 10 on my 6s, but, as I said, it's barely noticeable. Battery performance is also very slightly worse - though post-upgrade, as it often is, battery life is pretty well hard-hit for at least a day or two.

    The other issue, of course, is battery degradation over time. But with the new $29 battery replacement program, that's also fixable for a reasonable price (and the performance throttling due to battery degradation began with iOS 10.2.2 anyway). My battery is fine, but I had it replaced in December 2016 under Apple's battery recall.
    01-23-2018 10:06 AM
  8. kris665's Avatar
    Thank you all for your replies. I went ahead and updated so far I have noticed no difference even running side by side on someone else's iPhone se that's only a few months old and actually it kind of feels like my battery life improved somehow.
    01-23-2018 11:43 PM
  9. Just_Me_D's Avatar
    Thank you all for your replies. I went ahead and updated so far I have noticed no difference even running side by side on someone else's iPhone se that's only a few months old and actually it kind of feels like my battery life improved somehow.
    That's awesome, and I appreciate the update. Take care...
    01-24-2018 07:49 PM
  10. TripleOne's Avatar
    Thank you all for your replies. I went ahead and updated so far I have noticed no difference even running side by side on someone else's iPhone se that's only a few months old and actually it kind of feels like my battery life improved somehow.
    That’s great to hear!
    My 6s Plus runs iOS 11 well.
    01-25-2018 06:15 AM
  11. kataran's Avatar
    As stated above the privacy features is the reason to always update the OS

    That said my SE runs eleven with no lag
    01-25-2018 07:19 PM

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