That's it. I don't want a new O/S for my iPad! I am quite happy with the one I have. 2018 and I might think about an upgrade but I don't need one now and I don't want one now! Furthermore, I don't see why Apple should be trying to force it on me. Truth is, they do this too often for it to be necessary. Every couple of weeks they want to take over my iPad for half an hour and use 1.5 GB of my monthly data allowance to do something which never makes any apparent change. If someone else was paying for my data I would just let it go, but no one else is, I AM! How do I get rid of this persistent prompt to upgrade?