What is an eSIM?
An eSIM is a virtual SIM profile stored directly on your phone. Instead of a physical chip, it's a digital file you download — letting you connect to mobile networks in 150+ countries without ever needing to swap a SIM card.
Physical SIM vs eSIM
The key differences
Physical SIM card
- Pick one up at a shop or airport
- You have to swap cards by hand
- Your home SIM could get lost
- No way to set it up before you fly
- Stuck with one network at a time
eSIM recommended
- Order online in seconds — it arrives by email
- No card swapping — change plans with a tap
- Keep your existing number active
- Set it up before you fly, it activates when you land
- Store multiple eSIMs on one phone
How does an eSIM work?
From purchase to online in under 2 minutes
Is my phone eSIM compatible?
Most phones from 2018 onwards support eSIM. Check your device below:
Important: your phone must be unlocked (not tied to a carrier) to use a third-party eSIM.
Common eSIM questions
Can I use my regular SIM and an eSIM at the same time?
Yes. Most modern phones are dual SIM — you keep your home number active on your physical SIM and use the eSIM for local data.
Can I reuse my eSIM on another trip?
It depends on the plan. Some eSIM plans can be topped up; others are single-use. Onetel clearly labels which is which.
What if I don't use all my data?
Unused data expires with the plan validity. We recommend choosing a size that matches your usage.
Do eSIMs work for calls and texts?
Onetel eSIMs are data-only plans. Use WhatsApp, FaceTime, or any VoIP app for calls and messages.
Ready to try an eSIM?
Plans cover 150+ countries. Install before you fly, then switch on when you land.
