My phone keeps dying at 30-40% battery! Sometimes higher.. sometimes it runs normally.. but I cannot rely on it at all! I was told that there have been issues with a lot of the devices and that I should pop into Apple and they should replace the battery for me.. So, I went to Apple (15 miles away) for them to tell me I need to book an appointment for it to be tested.. which means going back.. which I really didn't want to do! I then asked how long they would need my phone for.. he replied all day. What am I supposed to do all day in a place I don't want to be? I can't go home then go back because I'll be on the train! Surely there should be another way?? I tried going to my contract issuer.. but because it's 13 months old they said they'd have to charge for a repair!