1. iMore Question's Avatar
    I have iPhone 4s running iOS 8.1.3. I like to upgrade to iOS 9.3 but have seen a lot of problems when upgrading 4s iPhone.
    11-10-2016 03:55 AM
  2. psamo's Avatar
    The biggest problem is it slows down the phone.But still it can use.
    11-10-2016 06:08 AM

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