What is an eSIM?
An eSIM is a digital SIM built into your device — no physical card. Activate by scanning a QR code or via your network's app. Dual SIM (physical + eSIM) is supported on most compatible devices.
| Network | eSIM | Activation | Notes |
|---|
| O2 | ✓ Yes | My O2 app / QR | Apple Watch; satellite-compatible |
| Three | ✓ Yes + PAYG | Three app / QR | PAYG eSIM — unique UK market |
| EE | ✓ Yes (broadest) | My EE app / QR | Apple Watch, tablets, laptops |
| Vodafone | ✓ Yes | My Vodafone / QR | Galaxy Watch, tablets |
| Tesco Mobile | ✓ Yes | QR code by email | Pay Monthly plans |
| Sky Mobile | ✓ Yes | Sky Mobile app | All plan types |
| Lebara | Rolling out | QR code | From Oct 2025 — check device list |
| iD Mobile | ✓ Yes | iD Mobile app | Rolling and 12-month plans |
| Giffgaff | ✓ Yes | Giffgaff app / QR | Community activation guides available |
Compatible devices
- iPhone: XS/XR (2018) and all later models. iPhone 15/16 UK are eSIM-only.
- Samsung Galaxy: S20 and later, Z Fold and Z Flip series.
- Google Pixel: Pixel 3 and all later models.
Check eSIM support: dial *#06# — if an EID appears, your device supports eSIM.
Three PAYG eSIM — UK standout
Three is the only major UK network offering eSIM on PAYG — no physical card, no contract, no credit check. Ideal for testing the network or secondary devices.
Wiseclearwise (wiseclearwise.online) is a fully independent consumer information and guidance website. We hold absolutely no affiliation, partnership, commercial agreement, endorsement, or operational connection with O2, Three UK, EE, Vodafone, Tesco Mobile, Sky Mobile, Lebara, iD Mobile, Giffgaff, or any of their parent companies including Virgin Media O2, VodafoneThree, BT Group, Sky UK (Comcast Inc.), Tesco plc, Currys plc, Lebara Group, or Telefónica UK. Wiseclearwise does not sell SIM cards, mobile contracts, or handsets of any kind. We do not access customer accounts, handle billing disputes, process payments, manage upgrades, or provide official technical support for any network. All plan details, pricing, features and promotions change frequently — always verify current information directly on the relevant network's official website before making any purchasing decision. Network names, logos and trademarks referenced on this website are the property of their respective owners and are used solely for the purpose of independent consumer information and identification. Wiseclearwise operates as an independent third-party consumer guidance service under UK consumer information guidelines.