I upgraded an iPad mini retina last night to IO8. Wish I read some technical journals before I did. I have experienced like many in the trade issues with battery drain and slow wifi connection. Nothing wrong with the router!

I would reccomend that you avoid this upgrade until the next software release.

Also DONT install on iPhone 4 or 4s, iPad 2, iPad mini ( first version) and iPod. I don’t think the ram and processor will cope.

It seems Apple have rushed this release. More testing needed. Very wary of the forthcoming Mac update