I'm wondering if I'm the only one who is having this problem. I have a 16Gb iPhone 3G and a 3G Mophie Juice Pack. Since getting the juice pack the following have occurred: Juice Pack didn't initiate a charge, even fully charged, with the phone unless it plugged into a power source for a few seconds while connected to the phone. iPhone stopped being able to send SMS messages. Replaced iPhone and Juice Pack. Now, after using the Juice Pack I cannot place or receive calls and am getting another replacement iPhone. It's likely the two aren't related but it's starting to become too much of a coincidence that my phone craps out after using the JP. Worked fine for several months until I got it.