1. iMore Question's Avatar
    Does it make my iPhone slower and will it take more memory or will it just replace earlier version. Then what is the memory space for iOS 8.3?
    05-16-2015 02:38 AM
  2. tapehead's Avatar
    What are you running right now? If you're going from like iOS 6 to iOS 8.3, you will notice a decrease in speed. However it still runs fine on 8.3. Although technically a hair slower, you'll only notice the difference if you're jumping drastically from an older OS. Or if you have an iPhone 6 next to it.

    Note, it's not kind to the battery life, though.
    05-16-2015 03:22 AM
  3. qbnkelt's Avatar
    I've got an old 3GS that I upgraded up to iOS 6, I think. It did make it slower but it still works fine.
    If you can handle the device losing some " zippiness" then you might consider it.


    Sent from my SEXY GORGEOUS AWESOME GOLD 128G iPhone 6
    Bigeric23 likes this.
    05-16-2015 06:31 AM
  4. Bigeric23's Avatar
    I've got an old 3GS that I upgraded up to iOS 6, I think. It did make it slower but it still works fine.
    If you can handle the device losing some " zippiness" then you might consider it.


    Sent from my SEXY GORGEOUS AWESOME GOLD 128G iPhone 6
    I just had a flashback regarding my 3GS. I really, really liked that phone.
    05-16-2015 10:15 AM
  5. qbnkelt's Avatar
    I still use mine occasionally. Love that wee thing.....


    Sent from my SEXY GORGEOUS AWESOME GOLD 128G iPhone 6
    05-16-2015 09:11 PM
  6. Ledsteplin's Avatar
    If you use the 4s on iOS 7 or 8, here's suggestions:
    To help your 4s run as smooth as possible, try these suggestions.
    1. Leave 20% or more of your internal storage space free. This helps to not constrain the system.
    2. Get rid of unnecessary features. Yeah, some are cool, but they will bog down an older model phone.
    3. Disable transparency effects. Toggle on "Increase Transparency" in Accessibility.
    4. Toggle off "Background App Refresh".
    Good luck.
    05-17-2015 08:57 PM

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