I didn't get this on my old iPad (an iPad 2) although back then I didn't have wifi at home. My sister is also having this problem and she has an iPad 2. We are running iOS 6.1.2 but it has been happening in iOS 6.1 and 6.0
Hope I helped
Btw thanks for reopening this Johan you are the best! 🙂
I have figured out why this happens! It will only happen when I am connected to the Internet! Except this is closed so it won't be fixed 😞
Yes I have at least 3 GB left please Mojang I know at least five people who have this problem!
I have some more info about this bug, I have quite slow Internet at my house and my friend has fast Internet and it happens at my house but not his, it also happens at my school which has fast Internet but minecraft.net and mojang.com are both blocked which leads me to think that it is caused by minecraft PE try's to constantly connect to one of these sites which would mean it could be fixed by simply making it only trying to connect to it once (probably on app start up)