Well, I'm on my fourth iPhone, and this one has no other problems other than the battery is sporatic. First, it would remain at 100% charged the entire day until I restarted it, and then it would drop down to 15% or so. I restored it twice and it seemed to be alright, but yesterday, my meter was find. I had 2 Hrs or usage and there was a little over 50% left on the battery. I left it off the charger last night, and in the morning I had 48% left. I didn't use the phone at all, and all of a sudden by 2pm, it had less than 10% left. I restored again, but this is getting annoying. Should I take it back for a replacement?