I tried mine again as well and for some reason it works quite well now. I am not sure what I did differently but it charges the phone when the pack is off and plugged in and the mophie will charge up the depleted phone when I turn it on. So hopefully day 1 was just a fluke and it will keep...

Yeah I am having the same issue. The guy at the Apple store said the mophie juice pack would work fine with iPhone 4s. I put the phone in the case and go to plug it in to charge and it says on the phone that charging is not supported. The website of the juice pack says that it should allow...