Should I put iOS4 on iPhone 3G?

Discussion in 'iPhone' started by Collected, Feb 11, 2011.

  1. Collected macrumors regular

    Apr 8, 2010
    My iPhone 3G has been happily running iOS 3.1.3 for ages now and everytime I sync iTunes tries to get me to upgrade to iOS 4.

    I've always put it off because I fear it will make my phone slower. Quite often with software upgrades if it's old hardware it can make the user experience slower rather than quicker.

    Should I just go ahead and upgrade or am I best just sticking on iOS 3?
  2. maflynn Moderator


    Staff Member

    May 3, 2009
    I think you'll incur a performance penalty and depending on your usage, you may see the affects more.

    What I mean by this is, that I put iOS 4 on my wife's old 3G and initially didn't really notice a huge performance slow down, but then as I started using it. I felt it being very sluggish, particularly opening up various apps. So if you don't use too many apps, just text, email and web. You may not feel like its too slow.

    Most of the slowness that I see on my wife's old 3g is for stuff starting up, that is playing a game takes forever for the game to load but after that performance is adequate.

    If I had to do it over again, I'd stick with the older version of the OS and not upgrade.
  3. UngratefulNinja macrumors 68000


    May 9, 2009
    All the posts here I've seen say no, it really slows it down.
  4. sorepheet macrumors member


    Oct 27, 2010
    East Coast
    Try whited00r?

    Do you want features like Game Center and Folders? Are you a jailbreaker? I've recently flashed my iPhone 2G with a whited00r build. I now have Folders, multitasking and other customization options- may be worth a shot to breathe new life into your phone. If you hate it where its still a 3.1.3 .ipsw you can simply reinstall a stock 3.1.3. I would recommend this before you attempt to use 4.0 on your 3G. Just my 2 cents.
  5. Collected thread starter macrumors regular

    Apr 8, 2010
    Yes that is exactly what I feared might happen. I may continue to skip the upgrade option in that case. It's not like I'm missing out on any huge features and I'm more than happy with what my iPhone does currently. Thanks for the experience report.
  6. xAnthony macrumors 65816


    Mar 2, 2010
    Don't upgrade! It honestly slows down your device to the point of you wanting a new phone. (Which I think was Apple's plan) My sister regretted updating her phone and now she complains about it all the time. I notice it too when I'm using it. It will just randomly freeze up and then reboot itself. It's horrible.

    Save your time and enjoy the operating system that you are currently running. If you want more features, try jailbreaking.
  7. Veinticinco macrumors 6502a


    Feb 25, 2009
    Don't get confused by the naysayers...

    4.0 bricked the 3G, 4.1 made it useable again albeit still very sluggish but 4.2 was the first (and last) iOS 4.x that did - finally - optimize the 3G experience.

    Do a restore and upgrade and you won't regret it. Much snappier feel.
  8. ac921ol macrumors 6502

    Feb 1, 2011
    alright I have two iphones tucked away for a rainy day.

    1. Jailbroken Unlocked 3g 3.1 version
    2. Straight out of the box 3g 4.2 version

    would you unlock the 4.2???
    would you upgrade 3.1 to version 4.2 and unlock them???
  9. wordoflife macrumors 604


    Jul 6, 2009
    Stick with 3.0 unless you absolutely need to upgrade (ie, app support)
  10. ac921ol macrumors 6502

    Feb 1, 2011
    really, is there any other reason then 3.x just being quicker, and not having folders and a few other tid-bits???

    did 4.x really screw it up for regular 3g iphones??? (by screwing up, I mean just making that much slower, making that much bigger of a pain in the butt.)
  11. vistadude macrumors 65816

    Jan 3, 2010
    Yeah anything 4.XX made iphone 3G much slower and buggier than 3.0. The only benefit i noticed was that you can control which apps have access to location services. Somehow the battery gets drained in 3.0 if you have location services on, even if you're not using any gps related apps. In 4.0, the battery doesn't get drained when location services is on but not actively using any gps apps.

    If you upgrade to 4.xx, quite a few apps will never work anymore because they will just crash every time you open them.
  12. Reach9 macrumors 68020


    Aug 17, 2010
    In America
    I have an iPhone 3G with iOS 4.2.1 and i'm gonna emphasize on this.. do NOT upgrade if you know what's best for you. Trust me, i would've have either if i knew how laggy my phone would end up being.
    Regardless i'm waiting for the iPhone 5 and then i'm giving this away.
  13. canucksfan88 macrumors 6502a


    Oct 28, 2007
    i would.

    im running a iOS 4 on a 3G. Jailbroken but with no multitasking (that made it way to slow)

    i like the folders and the wallpaper. i have sbsettings for rotation lock though.
  14. shelbymayer macrumors regular

    Aug 4, 2010
    my wife still complains about how slow her 3G is after I upgraded to 4.2.1...not worth the upgrade IMO!

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