Mark has a Samsung Note 5 and needs to upgrade. He's on MetroPCS, but he's looking to move to T-Mobile. Rich says that since Mark bought an unlocked Verizon phone, he was bound to run into problems using it from MetroPCS. Rich recommends buying a Samsung Note 9 directly from Samsung. Mark will get a purely unlocked phone from the factory, which will be updated by the carrier when he takes it to a new carrier. But Rich says that T-Mobile does a lot of deals on things, and Mark will likely get the best deal from them.