What changed between iOS 4 and iOS 5 to make it laggy on older devices?

Discussion in 'iOS 5 and earlier' started by mossme89, Jan 7, 2013.

  1. mossme89 macrumors 6502

    Jul 2, 2009
    Something I've noticed when playing around with my old iPhone 4. iOS 4 is silky smooth, yet something changed with iOS 5 as it is a tad slower. Not horribly laggy, but not as smooth. Seems like it was something with the UI and graphics as they look a tad different on iOS 5 vs iOS 4. Anyone know?

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