How an eSIM works
Instead of inserting a plastic card, you scan a QR code or use your network’s app to download a profile to your phone. Most eSIM phones can store several profiles and use one or two at a time.
Which phones support it
Recent iPhones, Google Pixels, Samsung Galaxy phones and many other models support eSIM, as do some smartwatches and tablets. Some US iPhone models are eSIM-only. Check your phone’s settings or the manufacturer’s site.
Pros and cons
- Pros: instant activation, easy dual-SIM, no waiting for post, handy travel eSIMs.
- Cons: moving to a new phone means transferring or re-downloading the profile; not every provider supports eSIM on every plan.
Switching to an eSIM provider
Your number-keeping rights are the same. In the UK, text PAC to 65075 and give the code to your new provider. In the US, ask the new carrier to port your number.
Last updated: 28 September 2026
