A travel eSIM is a mobile plan you download onto your phone instead of inserting a plastic SIM card. It makes sense when your phone supports eSIM, isn’t locked to one carrier, and you want mobile data from the moment you land without paying your home network’s roaming rates. It makes less sense if your phone is older, carrier-locked, or if you need a local number for calls.
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This guide explains how eSIMs work, how to check your phone, and how to decide between roaming, a local eSIM and a data-only travel eSIM. It doesn’t recommend any provider; prices and coverage change often, so compare current offers yourself.
What an eSIM is
An eSIM is the same SIM function, loaded digitally into a chip built into your phone. The GSMA, which defined this new way of loading a SIM, explains that the SIM can now be securely downloaded into a secure element permanently embedded in the device. It says this gives the same level of security as a removable SIM card.
For consumers, the GSMA says eSIM lets you store several operator profiles on one phone and switch between them remotely. Its general description says only one profile is used at a time, though some phones run two lines at once: Apple, for example, says supported iPhone models can have two eSIMs active together.
Apple lists a few practical gains for travellers. An eSIM can’t be removed if the phone is lost or stolen, and you don’t need to buy, carry or swap tiny SIM cards, or wait for one to arrive in the post.
Check that your phone supports eSIM
eSIM support depends on the phone model and, for some models, on the country where the phone was sold. Check yours before you buy any plan.
iPhone
Apple says you need an iPhone XS, iPhone XS Max, iPhone XR or later. There are regional exceptions: in China mainland only some recent models support eSIM, and some models sold in Hong Kong and Macao use two physical nano-SIM cards instead. Full details are on Apple’s eSIM setup page.
Google Pixel
According to Pixel Phone Help, Pixel 3a and later phones can use one physical SIM and one eSIM. Pixel 7 and later can run two eSIMs if the carrier allows it, and Pixel 10 models (except the Pixel 10 Pro Fold) use eSIM only. A Pixel 3a bought in Japan can’t use two SIMs.
Samsung Galaxy
On a Galaxy phone, open Settings > Connections > SIM manager and look for Add eSIM. Samsung’s support site also lists “Embedded-SIM” under SIM size in each model’s specifications. Samsung notes on its Levant support page that eSIM service varies by country and carrier, and some Galaxy A models only support eSIM in certain markets.
Check the carrier lock
A phone locked to your home network can’t use another carrier’s eSIM. On iPhone, Apple says to open Settings > General > About: if the phone isn’t locked, “No SIM Restrictions” appears next to Carrier Lock. On Android, ask the network that sold you the phone.
How you install a travel eSIM
You install an eSIM by scanning a QR code, using the provider’s app, or typing an activation code. Samsung’s Galaxy menu offers all three: an automatic setup where the carrier supports it, Scan QR code, and manual entry of an activation code. On iPhone you can scan the code with the Camera app.
Apple says the iPhone must be connected to Wi-Fi or a hotspot to activate an eSIM, apart from eSIM-only models in some countries. In practice, that means installing the eSIM at home or in the departure lounge before you fly, then switching the line on when you land. Delete nothing until the new line works.
Your options for mobile data abroad
Apple sets out three routes for staying connected abroad, and the same choices are open to Android users.
| Option | What you get | Points to check |
|---|---|---|
| Roam with your home carrier | Your usual number and plan, working abroad | Some destinations may be included; others need a travel pass or cost extra |
| Local carrier eSIM | A prepaid or postpaid plan, often with a local number | May need a passport or other ID to buy, depending on local rules |
| Worldwide data-only provider | Prepaid data plans, which Apple says cover over 190 countries or regions | Data only, so no local number for ordinary calls and texts |
Apple’s carrier list shows which networks in each country support eSIM on iPhone, including prepaid plans for visitors. The list covers African countries such as Kenya, Ghana, South Africa, Tanzania, Uganda, Zambia and Zimbabwe, so check your destination there before you go.
When a travel eSIM makes sense
A travel eSIM tends to suit short trips and multi-country journeys, where buying a physical SIM at each border takes time. Keep in mind these points:
- You keep your home number. With two lines on, Apple says the travel eSIM is used for data while your home line stays reachable for calls and texts.
- Roaming charges can still apply. Apple warns you might still incur roaming fees from your home eSIM, so set the travel line as your data line under Settings > Cellular > Cellular Data.
- Messaging keeps working. If you use only the travel eSIM, Apple says FaceTime and iMessage continue on your home number.
- Longer stays may suit a local plan. Apple notes that a postpaid local account can need proof of residency, a local bank account or a credit card.
It makes less sense if your phone fails the checks above, or if you mainly need a local number that people in the country can call. In that case a local carrier’s eSIM or a physical prepaid SIM is the better fit.
Coming home
With iOS 26 and later, Apple says the iPhone can turn the travel eSIM off and your home SIM back on when you return, depending on your country or region. If that doesn’t happen, open Settings > Cellular, make sure “Turn On this Line” is enabled for your main line, and turn off any travel eSIM you no longer use.
Sources
- eSIM: the SIM for the next generation of connected devices, GSMA
- Set up eSIM on iPhone, Apple Support
- Use eSIM while traveling internationally with your iPhone, Apple Support
- Find wireless carriers and worldwide service providers that offer eSIM service on iPhone, Apple Support
- Use dual SIMs and eSIMs on your Pixel phone, Pixel Phone Help
- Which Galaxy phones support an eSIM?, Samsung Support Australia
- Galaxy eSIM and supported network carriers, Samsung Support Levant
