I was wondering if anyone has any experience with this... If I tether my iPad Mini (wifi only) to my iPhone 5, will my iPhone5 slow down? What if I tried to use both at once (I'm surfing on the iPad, my friend is looking up something on the iPhone)? Just wondering what people have noticed with their own AT&T tethering. I might just exchange the iPad Mini wifi only for one with cellular when it comes out later this month. What would you do?