cachets postaux / Formation eSIM
The eSIM curriculum
Thirty short lessons, from "what even is it" to "fixing it on a ferry". Read in order if you're new; jump straight to your problem if you're not.
30 leçons · ~2 heures au total
Bases
COMMENCEZ ICI · Nº 01-06
N° 01
What is an eSIM? A plain-language guide
No jargon. What an eSIM actually is, how it differs from a plastic SIM, and why travellers adopted it first. A plain guide before your next trip.
8 MIN · MARTA KOWALSKA

N° 02
eSIM vs physical SIM: what actually changes
A clear comparison of eSIM and physical SIM cards - what's identical, what's different, and the two situations where plastic still beats software.
3 MIN · MARTA KOWALSKA

N° 03
Is your phone eSIM compatible? The full list
Which iPhones, Galaxy and Pixel phones support eSIM, plus the mainland China and US-locked exceptions, and the 30-second test to check your own.
3 MIN · MARTA KOWALSKA

N° 04
How to install an eSIM in two minutes
A step-by-step guide to installing an eSIM: what you need first, the actual install steps, and how to confirm it worked before you travel.
3 MIN · MARTA KOWALSKA

N° 05
Activate before you fly: the pre-flight ritual
Why installing your eSIM days before departure - not at the gate - matters, and the exact settings to check so it wakes up the moment you land.
3 MIN · MARTA KOWALSKA

N° 06
Data roaming explained (and why it costs so much)
What mobile data roaming actually is, why your home carrier charges so much for it abroad, and how a travel eSIM sidesteps the whole arrangement.
3 MIN · MARTA KOWALSKA
Avant de prendre l'avion
Nº 07-20Sur la route
Nº 11-24Correctifs
Nº 10-27Coupures profondes
Nº 18-30QUIZ SURPRISE · OUTIL
Ton téléphone est-il compatible avec une eSIM ?
LES DEVOIRS, LE STYLE AMUSANT
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