world phone

Does anyone know if the phones from the upgrade program will have more bands than phones directly from carriers? Where would you be best off getting the phone in order to get the most bands? Are you better off getting the one that is e-sim? I was reading the USA phones wont work as well abroad...

Hi, I am very interested in the iPhone SE, and planning to buy it at full price. I plan to use T-Mobile as carrier in the United States, and also use it when I travel to Japan and Hong and buy the sim card in those country, and pop into the phone to at least be able to use LTE data, so whether...