The SimKit eSIM guide

An eSIM is a digital SIM already inside your phone. Instead of swapping a plastic card, you install a mobile plan with a tap, so you can land in a new country with working data in about two minutes, keep your normal number, and skip roaming charges entirely.

New to eSIMs? Start with the basics, check your phone, then follow the setup guide.

eSIM basics

  1. 1What is an eSIM?How a digital SIM works, how it compares with a SIM card, and the trade-offs.6 min read
  2. 2How to use an eSIM: install, activate and switch it on abroadInstall on iPhone, Samsung or Pixel, then the three settings to change when you land.7 min read
  3. 3Which phones support eSIM?The iPhone, Samsung and Pixel models that support eSIM, and how to check yours.5 min read

Travelling from Australia? Compare Telstra, Optus and Vodafone roaming with a travel eSIM.

eSIM questions, answered

What is an eSIM?

An eSIM is a digital SIM built into your phone. Instead of inserting a plastic SIM card, you install a mobile plan in a couple of taps. Your phone can hold several eSIMs and switch between them, so you can add a travel data plan without removing your home SIM.

How do I install and activate a travel eSIM?

After you buy, open your order on the phone you will travel with and tap the install button. It sets everything up for you in about two minutes. On an older phone or a second device, open your cellular settings, choose “Add eSIM”, and scan the QR code instead. Then activate the line and turn on data roaming for it when you arrive at your destination.

Will an eSIM work on my phone?

Most phones released since 2018 support eSIM and must be carrier-unlocked. That includes iPhone XS and later, Google Pixel 3 and later, and recent Samsung Galaxy S, Note, Z Fold and Z Flip models. If your settings show an “Add eSIM” option, you’re good to go.

Do I keep my normal phone number?

Yes. A travel eSIM runs alongside your existing SIM. You keep your number for calls and texts on your home line and use the eSIM just for data, so there are no roaming charges.

When does my plan start?

Validity typically begins when the eSIM first connects to a network in your destination, so you can buy and install before you travel, and it starts counting when you arrive.

Can I run out of data, and can I add more?

You can. Keep an eye on your remaining data from your eSIM’s page under My account, and where a plan supports top-ups you can add more data to the same eSIM without buying a new one or changing your number. All in the browser, no app to install.

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