Roamza Guides

Travel smarter, stay connected.

Tips, country guides and connectivity know-how — so you land ready to roam.

Data & connectivity 5 min

How Much Data Do You Need in Vietnam?

How much mobile data do you need in Vietnam? Compare light, everyday and heavy usage for Grab, Google Maps, Google Translate, messaging, streaming and overland travel.

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Country guides 5 min

Best eSIM for the UK for Australians: What to Know Before You Fly

UK trips by Australians tend to be longer — a week in London, a fortnight in the countryside, or a stop on a Europe itinerary. Here's how to choose the right UK eSIM.

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Country guides 5 min

Best eSIM for Singapore for Australians: What to Know Before You Fly

Singapore is different from most destinations — for many Australians, it's a stopover, not the main event. Here's how to choose the right eSIM for a Changi transit or a longer stay.

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Data & connectivity 4 min

How to Avoid Roaming Charges in Thailand

Landing in Thailand with data roaming on can cost you before you've left the airport. Here's how Australians can use a travel eSIM to avoid roaming charges entirely.

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Data & connectivity 5 min

How Much Data Do You Need in Thailand?

How much mobile data do you need in Thailand? Compare light, everyday and heavy usage for Grab, Google Maps, messaging, streaming and island travel.

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Data & connectivity 6 min

How Much Data Do You Need in Japan?

How much mobile data do you need in Japan? Compare light, everyday and heavy usage for rail planning, navigation, translation, streaming and Shinkansen travel — plus fixed-data vs unlimited plan choice.

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How to use your phone overseas without getting roasted by roaming fees
Data & connectivity 4 min

How to use your phone overseas without getting roasted by roaming fees

Airplane mode is your friend. Here's the simple, repeatable routine for staying connected abroad without a surprise bill waiting at home.

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Country guides 4 min

Best Bali eSIM for Australians

A plain-English guide to choosing the right Bali eSIM for your trip — from light browsing to heavy streaming and hotspot use.

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Japan eSIM Guide for Australians: How Much Data Do You Actually Need?
Country guides 9 min

Japan eSIM Guide for Australians: How Much Data Do You Actually Need?

Travelling to Japan? Learn whether you need 5GB, 10GB or unlimited data, how Japan eSIMs work, and how to stay connected without swapping SIMs.

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Data & connectivity 7 min

Bali eSIM vs SIM Card: What's Better for Australians?

Bali eSIM or local SIM card? Compare setup, convenience, costs and roaming for Australians travelling to Bali, and choose the right option for your trip.

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eSIM vs physical SIM: which one should you actually use?
How-to 4 min

eSIM vs physical SIM: which one should you actually use?

The honest comparison — speed, convenience, security and what to pick for your next trip.

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Country guides 6 min

Best eSIM for Thailand for Australians: What to Know Before You Fly

A plain-English guide to choosing the right Thailand eSIM for your trip — from light browsing to heavy streaming and hotspot use.

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Best eSIM for Japan for Australians: What to Know Before You Fly
Country guides 6 min

Best eSIM for Japan for Australians: What to Know Before You Fly

Planning a trip to Japan? Learn how Japan eSIMs work, how to choose between prepaid and unlimited data, and what Australians should check before they fly.

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Data & connectivity 8 min

How Much Data Do You Need in Bali?

How much mobile data do you need for Bali? Compare light, everyday and heavy usage for Maps, Grab, WhatsApp, social media, streaming and hotspot use.

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Country guides 6 min

Best eSIM for New Zealand for Australians: What to Know Before You Fly

A practical guide to choosing the right New Zealand eSIM for your trip — from city breaks to South Island road trips.

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How-to 4 min

Can you use WhatsApp, Grab and Google Maps with a Bali eSIM?

Yes — here's how a Bali eSIM works with the apps Australians rely on most, from WhatsApp and Grab to Google Maps and social media.

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Data & connectivity 7 min

How Much Data Do You Need in New Zealand?

How much mobile data do you need in New Zealand? Compare light, everyday and heavy usage for Maps, messaging, streaming and road trips.

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How-to 5 min

How to set up your Bali eSIM before departure

A step-by-step guide to installing your Bali eSIM at home over Wi-Fi so it's ready to switch on the moment you land.

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Country guides 6 min

Best eSIM for the USA for Australians: What to Know Before You Fly

Planning a trip to the USA? Learn how US eSIMs work, how to choose between prepaid and unlimited data, and what Australians should check before they fly.

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How-to 4 min

Is your iPhone or Samsung eSIM compatible for Bali travel?

Not sure if your phone works with a Bali eSIM? Here's a quick guide to eSIM compatibility for iPhones and Androids.

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Data & connectivity 8 min

How to Avoid Roaming Charges in Bali

Travelling from Australia to Bali? Learn how to avoid unexpected roaming charges, use an eSIM for mobile data and keep your Australian number while you're away.

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Country guides 6 min

Best eSIM for Vietnam for Australians: What to Know Before You Fly

Planning a trip to Vietnam? Learn how Vietnam eSIMs work, how to choose the right data allowance, and what Australians should check before they fly.

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Data & connectivity 7 min

Can You Keep Your Australian Number With a Bali eSIM?

Yes, you can generally keep your Australian SIM installed while using a Bali eSIM for mobile data. Learn how dual SIM works and what to check before you fly.

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Data & connectivity 7 min

How to Avoid Roaming Charges in Japan

Travelling from Australia to Japan? Learn how to avoid unexpected roaming charges, use an eSIM for mobile data and keep your Australian number while you're away.

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Travel tips 8 min

Bali Travel Checklist for Australians

Heading to Bali from Australia? Use this practical pre-travel checklist for documents, entry requirements, insurance, money, mobile data, apps, packing and other things to sort before you fly.

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