Airalo
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Airalo pioneered the eSIM marketplace and remains a leading platform for travelers across Asia. The service sells data-only plans for over 200 countries and regions, with regional bundles that simplify coverage across Southeast Asia and beyond. Installation happens instantly from your phone, no physical SIM card needed.
The platform shines through breadth of options. Country-specific plans cover Japan, Thailand, Singapore, and dozens more Asian destinations, while regional passes let you roam multiple countries without switching plans or managing multiple purchases.