Do I need to open international roaming to Thailand?

1. Phone cards in Thailand need to be purchased in real-name registration system. After landing in Thailand, you need to bring your passport to the local communication company to apply for a suitable calling card and package before you can activate it.

2. Choose a suitable communication operator: Thailand has three major communication operators: AIS, Truemove and DTAC. AIS network has the widest coverage, the most stable signal and relatively high price. Truemove has the fastest network speed and the most flexible package, and the signal is not very good in some remote areas; DTAC has moderate network quality and price, and there are many preferential activities and free services.