Most Australian phones will now have access to the 3G network in the USA, as T-Mobile has refarmed this frequency to the 1900MHz band. This is compatible with most Australian phones, including all iPhones.
However not all phones will work on T-Mobile's 4G network.
T-Mobile's 4G network works on LTE band 4 and LTE band 12. Generally LTE band 4 is used for faster data access in most large towns and cities, while LTE band 12 is used for extended coverage in rural areas.
Quite a lot of phones sold in Australia will work on LTE band 4, although only a handful of phones will work on LTE band 12.
The following phones are compatible with LTE band 12, which gives you full access to T-Mobile's complete LTE 4G network:
- Apple iPhone 6S
- Apple iPhone 6S Plus
- Apple iPhone SE
- Apple iPhone 7
- Apple iPhone 7 Plus
- Google Pixel
If you have one of these phones you will benefit from faster data speeds, more extensive coverage and better indoor coverage.