My phone CAN NOT take a sim card. Whats the main local carriers that work all over Thailand?
TLDR : Answer Summary
In Thailand, the main local carriers that support eSIM are AIS, DTAC, and True. Users have shared positive experiences with AIS, which offers eSIM plans that can be managed through their app, allowing for easy top-ups and plan selection. DTAC is also recommended for its variety of plans, including affordable options for long-term use. Buying regular SIM cards (or eSIM) from stores like 7/11 or official carrier counters is suggested instead of tourist options for better services.