eSIM Guide for Southeast Asia: Thailand, Bali & Beyond
Southeast Asia on mobile data
Southeast Asia is one of the best regions in the world for budget travel, and mobile data follows the same pattern. Plans are affordable, coverage is better than you would expect, and the apps you will rely on are simple to use.
Country-by-country reality
Thailand has the most reliable coverage across the region. Indonesia is excellent in Bali and Java but weaker on remote islands. Vietnam has improved dramatically, with good 4G in cities and along tourist routes. Cambodia and Laos are patchier, especially outside main cities. The Philippines varies wildly by island.
The apps that matter
Grab handles rides across Thailand, Vietnam, Philippines, Malaysia, Singapore, and Indonesia. Google Maps works throughout the region. WhatsApp and Facebook Messenger are the primary communication tools. GrabFood and Foodpanda handle delivery.
Data usage patterns
Southeast Asia tends to encourage a more relaxed travel pace, which means more time on Wi-Fi at guesthouses and cafes. Most backpackers find 5 GB lasts two weeks easily. More active travelers using maps and ride-hailing daily should budget 10 GB.
Browse regional eSIM plans covering Southeast Asia.