So, does OS 5 work on an origina iPhone 4? What issues have you had, and have they been resolved? So, until Apple presents consistently fully working and bug free upgrades, gives us a means to revert to a previous, working OS environment, or provides a support option for 'permanent software damage' caused by an OS upgrade, alll we can do is share information. Apple always presents the latest software upgrades to us when we sync, but taking it immediately, though logical, hasn't always worked out well. Owners of previous generation products have always had this problem: do I upgrade or not? Will I get better performance, or will this be a side-grade, or back-grade? The reality is, as much as we'd all like the latest and greatest features (as many of them as we can get with our hardware, at least), we shouldn't have to pay an unknown performance penalty. It took almost a year of updates before the phone's speed improved, but never returned to what it was with it's original OS. Apple's position on support was that there was nothing wrong with the hardware, so they offered no fix. No, a full restore or reset did NOT revert the OS. Of course, no way to back up to OS 2, it was a one-way street. The phone did operate, but became very sluggish and unresponsive, basically, a real frustration.

When OS 3 showed up, I upgraded almost immediately, not realizing how bad an idea that was. My example is I had an iPhone 3 running OS 2. Previous experiences by owners of less-than-current iPhones that upgrade to a new and flashy OS haven't been great. As if Apple doesn't know, or hasn't tested for full iPhone 4 compatibility. And the second 'check Google' answer was the creator and manufacturer directing me to an unknown third party, without accountability, for information. The first answer is exactly the situation I had with my old iPhone 3 (see below)! 'We will work with you' means 'upgrade at your own risk, if the phone performance is poor, but there are no hardware issues, you're stuck with it'. Nothing of the kind! Their answer got down to a dodge: 'if you have problems, we will work with you', and 'check Google to find out if there are problems'. I own an iPhone 4, and asked the simple question: 'If I upgrade to IOS 5, will my phone operate at least as well as it did with IOS 4, or will there be speed and compatibility issues?' Apple did a very flashy tap-dance all around the answer, never giving me a 'yes it will be fine' 'it will be better' or 'it won't be as fast'. This thread was prompted by a very frustrating call yesterday to AppleCare. I've started this thread to collect information and experiences from those that have the original iPhone 4 and have upgraded to IOS 5.

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