A physical SIM is a plastic card you insert into your phone. An eSIM is an embedded chip soldered onto the motherboard. You activate it by scanning a QR code or typing an activation code — no physical card, no trip to a shop. For a full comparison, see eSIM vs physical SIM.

Built into the hardware

The eSIM chip stays inside your device permanently — it cannot be taken out or misplaced.

Activated by QR code

Scan your provider's QR code and your plan loads in seconds.

Supports multiple profiles

An iPhone holds up to 8 eSIM profiles — flip between them in Settings.

Switch networks on the fly

No need to swap physical cards. Pick a different data provider straight from your phone\'s settings menu.

Why switch 2

Why travellers are moving to eSIM

eSIM does more than simplify things — for travellers, it removes a whole class of hassle from every journey. If you need data for streaming or want to pair your eSIM with a VPN, check our guides on eSIM data plans and eSIM + VPN setup.

Instant activation

Buy a plan and get it active in minutes — from anywhere. Skip the store visit, skip waiting for a delivery.

No physical swapping

No more hunting for a SIM pin at the airport sink. Your eSIM lives inside your phone.

Dual SIM

Your physical SIM keeps your home number active, while the eSIM carries cheap local data.

Fewer dropped calls

A physical SIM can bend, get lost, or vanish down a drain. An eSIM cannot.

Eco-friendly

No plastic wrapper, no plastic card, no courier delivery. Lighter on the planet.

Quick compare 3

eSIM vs Physical SIM — side by side

A fast reference for the main differences. For the full detail, see our full eSIM vs physical SIM guide.

Feature

eSIM

Physical SIM

Activation

Instant (QR code)

Visit store or wait for delivery

Switching

Instant, software

Physical swap

Dual SIM

Yes (eSIM + nano)

Depends on phone

Lost/damaged

Cannot lose it

Risk of loss or damage

Availability

iPhone XR+, most flagship

Universal

Travel use

Ideal

Needs unlocked phone + local SIM

Full comparison →

Set up in 3 steps

Switching is simple — here's what to do.

Confirm your phone

Most phones from 2019 onwards support eSIM. Check our compatibility list to be certain before you buy.

Confirm your phone →

Select a plan

Browse Onetel plans sorted by country or region. Choose data that fits how long you're away.

See plans →

Scan & connect

Point your camera at the QR code in your order confirmation and the eSIM activates right away. You're online.

How to install →

Common questions

Yes — most current phones support Dual SIM, so you can keep both active at once. Your home number stays on the physical SIM while you add a Onetel eSIM for data on the road. For the full steps, check the <a href="/esim/esim-dual-sim-setup" style="color:var(--brand-text, var(--brand-primary));font-weight:600;">dual SIM setup guide</a>.

Yes — eSIM matches the security of a physical SIM, and in some ways exceeds it. The profile is encrypted when provisioned and locked to your specific device, so it can't be removed or stolen.

Yes — eSIM and physical SIM operate separately. You can turn off the eSIM and switch to your physical SIM whenever you like. Having an eSIM doesn't stop you using a physical SIM.

Need to move your eSIM to another phone? Send your order details to the provider and they will generate a fresh QR code. A physical SIM cannot be reissued remotely.

eSIM Explained: The Traveller's Guide

All eSIM guides

An eSIM is a SIM that lives inside your phone

Why travellers are moving to eSIM

eSIM vs Physical SIM — side by side

Set up in 3 steps

Common questions

Can eSIM and a physical SIM work together?

Is eSIM secure?

Can I go back to a physical SIM?

What happens if my phone is lost?

Give eSIM a go?