Arranging your data pack before you travel makes your arrival much smoother. HelloRoam delivers a QR code to your email within minutes of your purchase. A HelloRoam Southeast Asia regional eSIM replaces that hassle with one plan that switches carriers automatically as you hop from Thailand to Cambodia to Vietnam to Laos.
Singapore leads the region with near-perfect 4G and 5G from Singtel, StarHub, and M1. It is the region's most reliable data hub and works as a perfect test point before continuing to countries with weaker infrastructure.
Thailand is the region's most popular tourist destination and has solid 4G from AIS, DTAC, and TRUE. Bangkok, Chiang Mai, Phuket, and Pattaya all have strong coverage. Popular islands like Koh Samui, Koh Phangan, and Koh Lanta have 4G in resort areas. Remote northern highlands near Myanmar and Laos borders have gaps.
Vietnam has strong urban 4G from Viettel, Mobifone, and Vietnamobile. Ho Chi Minh City and Hanoi have dense coverage. Hoi An, Da Nang, and Hue are well-served. The northern mountain provinces (Sapa, Ha Giang, Ba Be National Park) have more limited signal in rural areas.
Indonesia presents the biggest coverage challenge in the region. Bali, Java (Jakarta, Yogyakarta, Surabaya), and Sumatra's main cities have excellent Telkomsel 4G. But Indonesia's 17,000+ islands mean outer provinces like Papua, Maluku, and remote Sulawesi have very poor coverage.
The Philippines has improved rapidly with Globe and Smart both expanding 4G. Manila, Cebu, and Davao are well-served. Tourist islands vary widely from good coverage at Boracay to very limited signal on remote Palawan beaches.
Cambodia, Laos, and Myanmar have the region's most limited networks. Main cities and tourist hubs (Phnom Penh, Siem Reap, Vientiane, Luang Prabang, Yangon) have functional 4G. Rural areas often have no signal.
Apple App Store
