Can I use my eSIM on a plane?
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| State | In flight (airplane mode on) | After airplane mode is switched off |
|---|---|---|
| Stage | What to actually do |
|---|---|
자주 묻는 질문
Does the eSIM need switching off separately before airplane mode goes on?+
No. Airplane mode already cuts the signal of both the home SIM and the eSIM at the same time automatically — there is no separate step to do first.
Does leaving airplane mode on for many hours damage the profile or make it expire faster?+
No. Time spent in airplane mode has no effect on the profile's integrity. The expiry date itself depends on the plan type: an on-purchase plan's clock runs from issuance regardless of flight length, while a first-connection plan's clock has not started until it successfully attaches.
Can in-flight Wi-Fi be used instead of the plan if I do not want to wait until arrival?+
Yes, if the airline offers it, but it is an entirely separate service from the plan, with the airline's own terms and its own cost, unrelated to what was purchased.
If the profile was forgotten before boarding and there is no airport Wi-Fi, what should be done?+
Wait until reaching the destination and find a reliable internet connection first, such as accommodation Wi-Fi, then install the profile and set the APN following the guide. If internet is urgently needed in the meantime, public Wi-Fi wherever it can be found is the fallback.
Does this differ between domestic and international flights?+
The principle around airplane mode and Wi-Fi is the same for both. What differs is that a travel data plan is typically useful only once reaching an international destination, not on a domestic flight where the home line usually already works as normal.
If everything seems set up correctly but there is still concern before departure, what should be done?+
Contact the team via LINE at https://lin.ee/skDPoNx (@esimonline) or email at esimonline.asia@gmail.com, mentioning the device model, operating system, and order number, so it can be checked before you actually depart.
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