EUR

What is an eSIM and how does it work?

A SIM card built into your phone. What it is, how it differs from a physical SIM and from roaming, and which phones support it.

4 min

An eSIM is a SIM chip soldered into your phone at the factory. Instead of swapping plastic, the carrier details are loaded onto that chip as software. Getting a line abroad is no longer a trip to a shop - it is a profile download.

When you buy a package on Penyu you receive a QR code and activation details. Scanning that code installs a partner carrier line for your destination. When you land, your phone connects to that network on its own.

Physical SIM, roaming and eSIM compared

Your line + roamingLocal SIM abroadPenyu eSIM
Ready whenInstantlyAfter queueing at the airportDays before you travel
Your numberKeptChangesKept - your own line stays on
PriceThe most expensiveVaries, needs hagglingFixed and known upfront
ID / registrationNot neededPassport required in most countriesNot needed
Swapping cardsNoneYou remove your own SIMNone, nothing comes out

What a Penyu eSIM actually gives you

  • Mobile internet (data). All plans are data-only.
  • No phone number, calls or SMS. Everything that runs over the internet - WhatsApp, FaceTime, Telegram, Zoom - works normally.
  • Hotspot and tethering are included; connect your laptop or a travel companion at no extra cost.
  • Your own line stays active on the phone: you still receive the SMS from your bank while data flows over the eSIM.
Validity starts on connection, not on purchase

The plan starts counting the first time the eSIM connects to a network at your destination. That is why installing it at home, on a calm Wi-Fi connection, costs you nothing.

Does my phone support eSIM?

As a rule of thumb: iPhone XS and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer. Two caveats: the phone must not be carrier-locked, and some regional models (notably mainland-China iPhones) ship without eSIM hardware. Check your exact model below.

Verificação de Compatibilidade do Dispositivo

Escreva o modelo do seu dispositivo e descubra se suporta eSIM

Lista completa de compatibilidade →
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Perguntas frequentes

Will my own line be switched off?

No. The eSIM sits alongside it as a second line. Your number stays reachable for calls and SMS; you only point "cellular data" at the eSIM.

Can I make phone calls with the eSIM?

Penyu plans are data-only, so no carrier calls or SMS. Voice and video calls through WhatsApp, FaceTime, Telegram and similar apps work fine.

Can I install the same eSIM on a second phone?

No. An eSIM profile installs on one device. Two phones need two plans - which you can buy in a single order by choosing a quantity.

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