Best 21-day eSIM for Asia

Travelling Asia for 21 days (3 weeks)? A regional eSIM keeps you connected across multiple countries without swapping SIM cards. One plan, instant QR delivery, no contract.

Starting from (Free)
¥92.82
Pro — save 7%
¥86.32
Premium — save 12%
¥81.68

21-day regional plans — Asia

Best Value
Asialink
3 GB
30 days validity · 18 countries
¥92.82
¥30.92/GB
Asialink
5 GB
30 days validity · 18 countries
¥107.10
¥21.42/GB
Asialink
10 GB
30 days validity · 18 countries
¥178.50
¥17.85/GB
Asialink
20 GB
30 days validity · 18 countries
¥278.46
¥13.92/GB
View all Asia plans →

Other trip lengths — Asia

3-day Asia eSIM5-day Asia eSIM7-day Asia eSIM10-day Asia eSIM14-day Asia eSIM30-day Asia eSIM

Countries in Asia

21-day Afghanistan21-day Armenia21-day Azerbaijan21-day Bangladesh21-day Bhutan21-day Brunei21-day Cambodia21-day China21-day Georgia21-day Hong Kong21-day India21-day Indonesia21-day Iran21-day Iraq21-day Israel21-day Japan21-day Jordan21-day Kazakhstan

FAQ — 21-day Asia eSIM

What eSIM covers Asia for 21 days?
A regional Asia eSIM covers multiple countries in one plan. Look for validity_days ≥ 21. LTE.app regional plans include countries across Asia — no SIM swapping between borders.
Regional vs country-specific eSIM for 21 days?
A regional plan is best if you're crossing multiple countries. If you're staying in one country for the whole 21 days, a country-specific plan typically offers more data per dollar.
When should I install my Asia eSIM?
Install at home before you fly, over Wi-Fi. Activation begins when you land. You'll have LTE from the moment you arrive — no SIM card queue.
Save on every trip with membership
Pro 7% off · Premium 12% off · Smart Coach AI
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Best 21-day Asia eSIM (2026) — All Countries — LTE.app