Digital SIMs — compatible devices, activation steps, and which networks support them.
Ask Our Team →An eSIM is a digital SIM built into your device — no plastic card needed. Activate by scanning a QR code or using your network's app, typically in under 10 minutes. All three networks covered here fully support eSIM in 2026.
| Network | eSIM Supported | Activation | Notes |
|---|---|---|---|
| O2 | Yes | My O2 app or QR code | Apple Watch Cellular; satellite-compatible |
| Three | Yes | Three app or QR code | PAYG eSIM available — rare in UK market |
| Sky Mobile | Yes | Sky Mobile app | All plan types supported |
iPhone XS, XR (2018) and all later models. iPhone 15, 16 and Air (2025) UK models are eSIM-only with no physical SIM slot.
S20 series and later. Z Fold and Z Flip series. Selected Galaxy A series.
Pixel 3 and all later models.
Dial *#06# — if an EID number appears alongside your IMEI, your device supports eSIM.
Three is one of the only UK networks to offer eSIM on PAYG — no contract, no credit check, fully digital activation. Useful for devices without a physical SIM slot or for testing Three before committing.
Our independent team can help you compare O2, Three and Sky Mobile in a 2-minute call — free, no sales pressure.