I really want to get this unbranded model (HATE carrier branding): Amazon.com: Samsung Galaxy Note N7000 16GB Unlocked Android Smartphone - Dark Blue: Cell Phones & Accessories But I've read that 4G speeds will not work with T-Mobile, which I'm currently on (prepaid). I'm willing to switch to AT&T prepaid if I know I can get 4G speeds on their network. Has anyone bought this model and gotten it to work at its best speed on AT&T? Thanks in advance!!