Read the sentence carefully: "The Apple ID and password originally used to set up the device". That may not be your Apple ID and password anymore. You might have a second hand device. Or you might have changed your Apple ID and password since you originally set up the device.
When you reset to factory settings, you are asked for the current Apple ID and password, not the original Apple ID and password used to set up the device some years ago.
I'm using a second hand Ipad 2 and didn't have this issue so this bug doesn't occur in all cases in seams.
I'm guessing someone sold (or more probably passed on) their device without a proper reset or something (simply unlogged their device maybe and logged with a new ID).
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I just got a wifi only iPad 2 given to me on iOS 9.3 launch day.
I've never used one before...Never understood the attraction. My first impression when it was handed to me was.... Man this thing is HEAVY.
Anyway... It was wiped clean when I got it. I backed up my iPhone 5 to iCloud, then "restored from backup" the iPad. Everything worked perfectly without a glitch.
Then updated the iPad (not the phone) to iOS 9.3 and that went perfectly too. No problems at all.
My impression of iOS 9.x on an iPad 2 is that it is super slow. To the point I don't even want to play with it except to watch a movie or look at pictures (which is why I got it in the first place).
On an off topic... Is there ANY comfortable way to hold this thing for any amount of time? It seems so intentionally un-ergonomic and unnecessarily heavy.
Wow, how people forget fast. I was as light as it could be for its time.
You can just use it by putting your arm/hand on your lap and just then putting it in your open hand.
I can hold it, with the cover and plastic protection, for hours like that and with that protection it weights 750g+.
The Ipad 2 on 9.3 is not really slow for a device that old (if you compare to a new device of course it is much slower, that's the whole point of getting a new device), though it was slowish on 9.0.
If your just using it for watching movies and photos or reading books (and not browsing the net where its lack of speed is most apparent), they you should be fine.
I still use a 3GS, which is even slower to play movies/songs on my dlna servers just fine.
People are really taking tech for granted; anyone who has used really old tech, in the 1980s or 1990s, would certainly not call the Ipad 2 "slow" for such functions.
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I picked up an iPad 2 16GB for next to nil last week to see what this was all about. It's fast, it runs smoothly. The battery runtime is absolutely insane. I've found myself using it for reading a lot more than I thought I would have.
Simple answer, because old doesn't mean useless. It doesn't need to die with dignity because from a usefulness perspective, it isn't ready to die. But I figure as a project head of a team of developers enabling OS X to run on older machines, you're fairly familiar with this concept.
I think the Ipad 2 is only at the end of its rope as a web browser, mostly because modern web pages are ridiculously big with thousands of links, and that's what taxes the processor the most. For media consumption, it is still OK.