Optus review

Roaming plans start at AUD 5, which lines up with the €5 figure that most listings on this site open at. Optus prices the option as part of a carrier plan, so the entry figure covers the roaming add-on rather than a standalone travel eSIM bought per trip.

Coverage is global in scope and spans from 150 countries, which places Optus above the 74 typical country count on this site. That makes it a practical pick for a trip that crosses several markets, provided roaming is added to an existing Australian plan before departure.

Unlimited data is not part of the roaming offer, so a buyer who wants uncapped usage should weigh other brands instead. Optus argues its case on reach, with from 150 countries available to a plan that starts at AUD 5 and is added to an existing Australian mobile account.

It suits travellers who already hold an Optus mobile plan and want roaming on the same account. Optus is a carrier that has traded from Australia since 1981, so the roaming option comes through the network the customer already pays for, with the plan running on the same account throughout the trip.

Support runs on phone, chat and help centre, so help is available by phone, chat and a help centre. All of it comes from the carrier behind the plan rather than a third-party eSIM seller, which matters once the trip is running and the line in your hand is no longer your home network.

Zwitchy covers 200 countries against Optus at from 150. Both reach widely, so the choice turns on how the service is bought: Optus starts at AUD 5 and is sold as a carrier plan, while Zwitchy is shopped as a travel product.

eSIMGo.is lists a starting price of $0.99 against Optus at AUD 5, so a buyer focused purely on entry price starts there. Optus answers with breadth instead, reaching from 150 countries as a carrier plan rather than a single-market eSIM picked per trip.

Optus is operated by Singtel Optus Pty and is based in Australia, where it has traded since 1981. That carrier base is the reason its roaming arrives as part of an existing mobile plan, which is a different setup from buying a travel eSIM per trip.