I'm anxiously waiting for May to come. I'm currently using a Lumia 810 for T-Mo but I was previously using my AT&T Lumia 920 with att. I closed the account and switched but I so miss my 920. You don't realize how much the 920 is such a great piece of technology until you don't have it anymore. I'm holding off selling it cause those unlock codes are only about a month away. Anybody else waiting?