How will iOS 5 run on iPhone 4?

Discussion in 'iPhone' started by saintforlife, Oct 10, 2011.

  1. saintforlife macrumors 6502a

    Joined:
    Feb 25, 2011
    #1
    I remember very well what iOS 4 did to my iPhone 3G. The 3G became borderline unusable with its terrible lag and constant freezing of various apps (with Maps being the worst) which forced me to upgrade to the iPhone 4 before my 2 year contract was up. Now that iOS 5 is coming out, I hope the iPhone 4 is better equipped to run it. If iOS 5 ends up slowing down my iPhone 4, I will not be a happy camper.

    So for people who have played with iOS 5 on their iPhone 4, how does it run compared to iOS 4.X? Do you see any lag or slow downs of particular apps like maps?

    TIA for your inputs!
     
  2. filmfanatic24 macrumors 6502

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    Sep 5, 2007
  3. dukebound85 macrumors P6

    dukebound85

    Joined:
    Jul 17, 2005
    Location:
    5045 feet above sea level
    #3
    if it is slow, will apple not allow one to go back to an earlier os?

    I can only imagine how the 3g users felt with ios4...
     
  4. midnightfalcon macrumors member

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    Oct 6, 2011
  5. blunti macrumors 6502a

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    Mar 15, 2011
    #5
    runs great on my i4. in fact, feels faster than 4.x
     
  6. dontwalkhand macrumors 601

    dontwalkhand

    Joined:
    Jul 5, 2007
    Location:
    Phoenix, AZ
    #6
    It will run great on the iPhone 4, don't forget, the WWDC keynote they showed it running on an iPhone 4, with no 4S in sight.
     
  7. saintforlife thread starter macrumors 6502a

    Joined:
    Feb 25, 2011
    #7
    Nope. You can't go back once you upgrade. There is a way be saving the ipsw files or something, but I am not familiar with the process.
     
  8. Bojan macrumors member

    Bojan

    Joined:
    Sep 28, 2011
    Location:
    Chicago
    #8
    Save your shsh with umbrella,, so you can downgrade

    Powered by AlphaEfficiency.com on GT i9000
     
  9. mkaen macrumors regular

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    Jun 7, 2011
  10. LIVEFRMNYC macrumors 603

    Joined:
    Oct 27, 2009
    #10
    Same here .... iOS5 GM is smooth on iP4. Been using for about about a week and no signs of lag whatsoever. No signs of any decreased battery life either.

    One thing I've noticed is syncing via usb seems much faster than before.
     
  11. Gatteau macrumors 6502a

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    May 23, 2009
    Location:
    Italy
    #11
    I'm pretty sure iOS 5 will run on an iPhone 4 with no problems whatsoever.
     
  12. Chupa Chupa macrumors G5

    Chupa Chupa

    Joined:
    Jul 16, 2002
    #12
    Running great here too. Seems more responsive than iOS 4 but that could be the Kool-Aid talking. :D
     
  13. OMGbrandon macrumors 6502

    OMGbrandon

    Joined:
    Jun 29, 2010
    Location:
    Miami, FL
    #13
    Or maybe it was a 4S and you had no idea cause it looked the same! Haha
     
  14. TG1 macrumors 6502a

    TG1

    Joined:
    Feb 21, 2011
    #14
    Ah yes, I remember the lovely issues with the 3G and the last major OS upgrade. But I've been running the iOS 5 GM since last week with absolutely no issue on my iPhone 4. Smooth like butter. :)
     
  15. gloss macrumors 601

    gloss

    Joined:
    May 9, 2006
    Location:
    around/about
    #15
    It is without a doubt running more quickly on my iP4 than 4.x did. Color me surprised.
     
  16. KylePowers macrumors 68000

    KylePowers

    Joined:
    Mar 5, 2011
    #16
    This.

    Don't mind not having BiteSMS now because the Messaging app opens up so quickly.
     
  17. Justim macrumors 6502

    Joined:
    Sep 26, 2011
    #17
    iOS 5 seems to be made for iPhone 4.

    I think thats how they were able to add even more to the 4s.
     
  18. jwingfie macrumors 6502a

    jwingfie

    Joined:
    Dec 30, 2008
    Location:
    Athens, GA
    #18
    I agree with everyone, iOS 5 is running gloriously on my iPhone 4 :cool:
     
  19. macingman macrumors 68020

    macingman

    Joined:
    Jan 2, 2011
    #19
    Yep, iOS5 runs perfectly on my 4 no complaints at all.

    Still it won't hurt to get a 4S ;)
     
  20. err404 macrumors 68020

    Joined:
    Mar 4, 2007
    #20
    As far as the core OS is concerned, the most important spec is RAM and the iPhone 4 has the same RAM as the 4s.
     
  21. map1978 macrumors 68020

    map1978

    Joined:
    Feb 9, 2006
    Location:
    Jacksonville, FL
    #21
    Been outstanding for a week

    In fact it fixed my temperamental home button issue (went from 4.2.1 JB)
     
  22. Reach9 macrumors 68020

    Reach9

    Joined:
    Aug 17, 2010
    Location:
    In America
    #22
    Really? I thought the 4S had 1GB of RAM?
     

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