I have just bought a used iPad Pro 12.9 1st generation. I am trying to factory reset it without success. I’ve tried Settings, Reset, Erase all content and settings and it comes up with Remove All Mobile Data Plans This will remove all data plans from your iPad. Your subscriptions will not be cancelled etc. This iPad hasn’t got a sim. I have also tried the off/home button but it’s still got my name and all the apps I’ve searched the problem but can’t find a solution. Any help would be very welcome.