Discovered this weekend that this is the beginning of the end for my wife's iPad3. No 10 for her.
That, with add ins, cost me about a thou. Not sure I'd do that again. I'm hoping for many more years of use. But the cell data part already died. What's next?
My Father-in-Law has been using his iPad 3 (aka, iPad with Retina Display) on a daily basis for the last five years. He has been complaining that the battery no longer lasts 8-9 hours, but he maybe gets 3-4 hours before he needs to plug it into the charger. I told him it's time for a new iPad, but just for grins, I checked the iFixit.com site on how to repair the iPad 3's battery. Needless to say, it involves a microwave, a gel pack (heats in the microwave and softens the glue) and a lot of guitar picks (to hold the screen away from the case while the glue cools). I looked like once you got the screen off, installing the battery was fairly easy Now, getting the iPad back together so it didn't look like a third-grader's art project, I wasn't sure it could be done.
He did find someone who quoted him $150 for the repair, but I said he would be better off putting the $150 toward a refurbished iPad Air or Air 2 from Apple's Refurb Store. He might even be able to get money from Gazelle or one of the other Apple buy-back sites. Currently $40 for his Wi-Fi iPad 3 with 16 GB in Good condition which is better than nothing. Surprisingly, even the 64 GB Cellular iPad 3 is only worth $75 in Good condition.
I upgraded the night of release, and used iTunes to boot. I've never had an issue with the iTunes download, and it seems the people ending up with upgrade woes are doing the over-the-air updates.
The change in unlocking the screen threw off my Mother-in-Law and her iPad Air. She wasn't getting the timing down right. She has a Smart Cover on her iPad, and now it just shows the Power On screen, a little lock icon in the top, and the "Press home to unlock" above the Home button. When she swiped left, she got the Widgets page. I pointed her to iMore.com and their iOS 10 Hints and What you Need to Know.