Hi all, I got a used iPad 2 from a friend for a cheap price. I like it but it has a bit of a problem. When it's cold, it freezes up when I'm trying to use it and it keeps freezing until it warms up which takes about 5 to 10 minutes. I usually don't have this problem during the summer but now that winter is coming, I'm having this issue occur which is kind of annoying. Could anyone explain in terms of electronics theory what exactly is causing this to happen most likely? I don't suppose there's a way to fix this since Apple makes it hard just to open up the thing.