Everything you need. None of the surprises.

Know exactly what you’re buying before you take off. The everyday details first, the technical ones when you need them.

Good to know

Your plan ends when the data is used up or the days run out, whichever comes first. You can top up if you need more.

How to install your eSIM

Where it works: Vietnam
Networks: Viettel Mobile 5G, Vinaphone 5G, MobiFone 5G
Data: 100MB in total
Plan length: 7 days
Your days start: As soon as you install it
Start using it within: 180 days of purchase
Hotspot: Yes, share your data with other phones, tablets and laptops What’s a hotspot?Travelling with kids or mates? Hotspot lets your phone share this eSIM’s data with their phones, tablets or laptops, just like Wi-Fi. Most smartphones can do it. Turn on Personal Hotspot (iPhone) or Mobile Hotspot (Android), and they join it like any Wi-Fi network. Everyone uses the same data, so choose enough for the whole group. Sharing also uses more battery, so pack a charger.
Calls and texts: Data only. Call and message with apps like WhatsApp and FaceTime
Top-ups: Available
Your phone: Unlocked and eSIM-compatible. Check yours

How Katara eSIM Works

No Tech Degree Required

Shop it.

Choose your destination and data pack. No hidden tricks, no “gotchas.”

Scan it.

We’ll send you a magic QR code. Point, scan, and boom—you’re halfway there.

Stream it.

Activate in seconds and stream, scroll, and selfie from anywhere.

Roaming bills aren't souvenirs.

Your holiday should be full of memories, not bill shock. Skip the SIM-swapping headaches and stay connected with simple, affordable travel eSIMs.

175+ Countries

One eSIM to rule them all (and by all, we mean basically everywhere).

Instant Setup

Scan, tap, done. Your eSIM is live before your suitcase arrives.

No Roaming Shock

Enjoy transparent pricing with zero hidden charges or surprise bills.

Travel Light

Zero plastic, zero stress, 100% digital freedom.

Got Qs? We’ve got A’s

A few things worth knowing

Will my phone work with an eSIM?

Your phone needs to support eSIM and be unlocked, which means not tied to one carrier. Most iPhones from the XS and XR onwards and many recent Android phones do. Check your model before you buy.

When should I install it, and when do my days start?

Your 7 days start as soon as you install the eSIM, so install it just before you travel. Start using it within 180 days of purchase.

Install it while you’re on Wi-Fi. Our install guide walks you through it on iPhone and Android.

When will I get my eSIM?

It usually arrives by email within a few minutes of paying, with your QR code and install steps. Check your spam folder too. If nothing has arrived after 30 minutes, contact us and we’ll sort it out.

Can I make calls or send texts?

This plan is data only, so it doesn’t come with a phone number. Calls and messages through apps like WhatsApp, iMessage and FaceTime work over its data.

Your usual SIM stays in your phone, so you can still receive texts on your own number. Your home carrier may charge for those while you’re away.

Will my home carrier charge me roaming?

Not for data you use on this eSIM. To be safe, set the eSIM as your mobile data line and turn off data roaming on your usual SIM before you land.

Can I share my data with others (hotspot)?

Yes. Travelling with kids or mates? Hotspot lets your phone share this eSIM’s data with their phones, tablets or laptops, just like Wi-Fi. Turn on Personal Hotspot (iPhone) or Mobile Hotspot (Android), and they join it like any Wi-Fi network.

Everyone uses the same data, so choose enough for the whole group.

Can I top up if I run out?

Yes. You can add more data to the same eSIM. The link is in your eSIM email, or just ask us.

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