According to Gizmodo forum, if you have an iPhone 4 with the model A1332 and the first 2 serial code starts with 82, those iPhone 4 are all duds. And myself, I have that model number and first 2 serial starts with an 82.. I hope I'm not the only one. Who else has the model A1332 and serial code that starts with 82xxx...? You can find your iPhone 4 model # in the back of your phone and serial number in the back of the box.