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RedSim
Travel basics · 3 min read

Mobile internet
for travelers,
without the hassle.

An eSIM is mobile internet you can use abroad. You buy a plan online, scan a QR code with your phone, and you're connected, just like that. No physical card, no airport queue, no roaming bills.

Your usual phone number stays the way it is. The eSIM works alongside it, only for internet, only while you're travelling.

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No SIM card

Nothing to plug in or swap out

No queue

Buy from your phone, set up in a minute

No roaming

Pay one fair price upfront, that's it

No risk

Same phone number, same phone, no changes

Three things to know. That's it.

You don't need to understand how it works to use it. But if you're curious, here's the whole picture in three short paragraphs.

It's just internet abroad

That's it. An eSIM gives your phone internet access while you're in another country. Maps, WhatsApp, email, anything that needs data. It all works.

You set it up with a QR code

After you buy, we email you a QR. Scan it once, your phone remembers it forever. When you land abroad, your eSIM turns on and you're online.

Your real number keeps working

The eSIM doesn't replace your usual phone plan. It runs alongside it. Calls and texts to your normal number still come through.

From buying a plan to being online.

1

Pick a destination

Country, region, or global. Pay with card.

2

QR arrives by email

Within seconds. Save it for the trip.

3

Scan when you land

Settings → Cellular → Add eSIM. Done.

4

Use it like normal

Maps, calls over WhatsApp, the lot.

You don't need to learn anything new. If you can scan a QR code in a restaurant menu, you can set up an eSIM.

Honestly, that's the whole tutorial.

Why travelers prefer it

For decades, getting a local plan abroad meant queueing at an airport kiosk or paying your home carrier's roaming markup. eSIMs cut both out.

  • Buy ahead, set it up near your trip, no airport scramble
  • Pay local-style data prices, not roaming bills
  • Keep your home number live for calls and 2FA codes
  • Switch destinations mid-trip without changing hardware

What travelers ask before their first one.

Yes. Your home line keeps handling calls and texts on your usual number. The eSIM is a separate data line, so both work on the same phone at the same time.
No. Modern phones run two lines on the same modem, so the extra battery use is very small. On a normal day of travel you won't really notice a difference.
Your eSIM can connect to several local networks, so if one is weak your phone moves to another on its own. And if you still can't get online for any reason, we'll refund your plan.
Yes, and we recommend it. The plan doesn't start until you arrive and connect, so it won't use any data while you're still at home. Setting it up early also means one less thing to do when you land.
Yes. Most modern phones can store several eSIM profiles and let you switch between them in Settings. That's helpful when you're visiting more than one country and want each plan ready in advance.
Read the full FAQ →

Is your phone eSIM-ready?

Most phones from 2018 onward: iPhone XS+, Pixel 3+, Galaxy S20+, and dozens more. Dial *#06#. An EID number means you're ready. No commitment, no signup.

See full device list