An eSIM (embedded SIM) is a small rewritable chip soldered inside your phone that does the job of a plastic SIM card. Instead of inserting a card, you download a profile — a set of credentials that connects you to a mobile network.
Because the profile is software, you can add a plan in a couple of minutes from anywhere with an internet connection, and hold several plans on one device at the same time.
How it works
- You buy a plan and receive a QR code or install link.
- Your phone downloads the profile from the provider's SM-DP+ server over Wi-Fi.
- The profile is written to the eSIM chip and appears as a new line in your settings.
- You choose which line carries data and, for travel plans, enable roaming on that line.
eSIM vs physical SIM
- Nothing to lose, break or wear out — no tray, no exposed contacts.
- Instant delivery instead of a shop visit or postal wait.
- Multiple profiles on one device; switch between them in settings.
- Keep your home number active for calls and SMS while a travel plan carries data — or buy a plan that comes with a number of its own.
- The one trade-off: the phone must be eSIM-capable and carrier-unlocked.
Which devices support eSIM
iPhone XR, XS and newer (except mainland-China models), recent Samsung Galaxy S, Z and A-series, all Google Pixel from Pixel 3 onward, and a growing list of OnePlus, Motorola, Xiaomi and Oppo models. Most cellular iPads support eSIM too.
Frequently asked questions
What is an eSIM?
A digital SIM built into your device. You download a plan profile instead of inserting a plastic card.
Do I keep my phone number with an eSIM?
Yes. A travel eSIM adds a second line; your primary number stays on your existing SIM for calls and texts. Most travel plans carry data only, though Wanderly also sells Calls & texts plans that add a number of their own alongside your existing one.
Does my phone support eSIM?
Most phones released since 2018 do. Check Settings > General > About for an EID row on iPhone, or dial *#06# on Android.
Ready to try one?
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