eSIM
What a digital SIM changes, which networks handle it best, the travel setup that saves the most money, and why every fee attached to it is a scam.
Sections on this page
The facts
- Form
- Built into the phone
- Service
- Identical to a plastic SIM
- Requested via
- Official app or website
- Two lines on one phone
- Possible
What it means for you
An eSIM is your plan written into a chip already inside the phone instead of posted to you on plastic. The service is exactly the same. What changes is speed — minutes instead of days — and the ability to run a second line alongside your main one.
That second line is the genuinely useful part, and it is what makes travel dramatically cheaper.
The facts
- Best
- EE — one of the smoothest processes
- Also quick
- Three, O2, Vodafone
- Later and variable
- Sky Mobile
- Budget brands
- Widely supported; check by brand
What it means for you
| Network | Where it stands |
|---|---|
| EE | Among the smoothest in-app processes available |
| Three, O2 and Vodafone | Issued within minutes by app, website or shop |
| Sky Mobile | Arrived later and still varies by handset — confirm your exact model |
| Budget brands | Widely supported on recent plans, but not uniformly |
The facts
- Issue
- Free everywhere
- Transfer
- Free everywhere
- Reissue after loss
- Free everywhere
- Any charge asked
- A scam, without exception
What it means for you
No United Kingdom network charges for issuing, transferring or reissuing an eSIM — not even when your phone has been lost or stolen, because the number belongs to your account rather than to the chip.
Criminals have invented “transfer services”, “activation fees” and “migration charges” precisely because the real process is unfamiliar to most people.
The facts
- Before flying
- Buy a local or regional data eSIM
- On landing
- Enable it for data only
- Keep
- Your UK line for calls and texts
- On return
- Delete or archive it
What it means for you
This is where a digital SIM pays for itself many times over.
- Buy a cheap local or regional data profile before you fly.
- On landing, switch it on for data only.
- Leave your UK line active so calls and texts still reach you.
- Check data is actually routing through the travel profile.
- Delete or archive it when you get home — the whole thing reverses in seconds.
Still unsure after reading this?
Ring the desk and we will go through it with you. There is nothing to buy at any stage.