Guides
Travel eSIMs, explained
10 guides covering how eSIMs work, what to buy and what goes wrong. Every price quoted comes from the same dated provider data behind our comparison tables, last checked 2026-09-28.
Getting started
How eSIMs work
The technology in plain English: what an eUICC actually is, how a profile gets onto your phone, and what happens the moment you activate.
eSIM device compatibility
Which phones support eSIM, how carrier locks break it, how to check in thirty seconds, and what dual SIM actually does to your calls and data.
Buying an eSIM before you fly
Why airport prices are higher, how far ahead to buy, how activation windows work, and the pre-flight checklist that avoids a dead phone on landing.
eSIM activation troubleshooting
The failure modes that actually happen, in order of likelihood, with fixes for before you leave, the moment you land, and mid-trip.
Choosing a plan
eSIM vs roaming vs local SIM
An honest cost and convenience comparison of the three options, with worked examples using real prices from our comparison tables.
How much eSIM data do you need?
Realistic data usage by activity, a planning framework that takes two minutes, and why most travellers buy roughly twice what they use.
What unlimited really means
Fair use policies, daily full-speed allowances and throttle speeds, compared provider by provider, plus when unlimited is genuinely the right buy.
eSIMs for long trips
Regional and multi-country plans, top-ups versus rebuying, validity traps, and the point at which a local SIM beats a travel eSIM.
On the road
eSIM hotspot and tethering
Which providers allow hotspot, the caps that apply, why it matters more than most travellers expect, and how to avoid burning a plan in an afternoon.
eSIM safety and privacy
Data-only plans have no phone number - what that means for WhatsApp, banking apps, two-factor codes and staying reachable.
Ready to compare prices?
Real, dated prices for every destination we track, ranked by value rather than by commission.