Q: iOS 9.0.2 and iPads

Hi,

I have both an iPad Air and an iPad Mini (2nd gen), both of which are Wifi and 3G. Both were perfectly OK when I updated from iOS 8.4.1 to iOS 9 and even iOS 9.0.1, however, then came iOS 9.0.2.

Both iPads are running slow, they are jerky and to smooth at all. Some apps keep crashing, but the worst of it is that I cannot access any 3G or 4G data anymore. This only happened when i upgraded to iOS 9.0.2 and I need both iPads for working off site and away from any Wifi sites. No matter what I try I simply cannot get it working and I have tried everything (toggle on/off airplane mode, take out the sim and insert it again, reset network setting, and so on).

Whats even worse is that I can't even connect them to my iTunes on my Macbook Air (now running El Capitan) to back them up and restore them. Why? Because when I connect them they keep charging, then not charging, connecting then not connecting, so I can't even do that!

Has anyone got any ideas apart from taking them to a Genius bar or just using them as a handy paperweight or door stop?

Strangely enough neither my iPhone 6 or iPhone 5s has been affected!

HELP!!!!!!