USA eSIM guide for Australians — everything you need to know

The USA is a huge country — plan for distance and data usage accordingly

National parks the size of small countries, cities that never sleep, and road trips that genuinely live up to the hype. Whether it's a west coast loop or a New York city break, sort your data before you land.

How much data for the USA

Telstra and Optus roaming vs an eSIM

Telstra's International Day Pass and Optus's equivalent both charge roughly $10-15 AUD per day. For a two-week USA trip, that adds up to $140-210 in phone charges alone. A Proost USA eSIM covers the same trip for a fraction of that cost, paid once upfront.

Where it matters most

US road trips lean heavily on Google Maps and Waze for real-time traffic and route planning — patchy data on a long interstate drive is a genuine headache. Sort your eSIM before you land so you're covered from the airport onward.

Setting up before you fly

Keep your Australian number active

Adding a USA eSIM doesn't disable your regular Australian SIM — you'll still receive calls and texts on your Australian number (handy for bank verification codes), while the USA eSIM handles your data.