Google Fi (not voice) unlimited data worldwide is $65/month but need to be in USA for 60 days (read requirements). I've been using Fi for years. In USA they ride on top of TMobile (used to switch between a few carriers but they've all consolidated (bought by) to TMobile).
Doubt I would use it once I moved here. Probably just use a virtual service like Google voice.
James Smith my goal on this trip is just to check things out. No commitments, just overview. Appreciate your and everyone's suggestions... Still need knowledgeable guide in different areas (Pattaya first). Have spent the last several days in Bkk and an just now starting to branch out. Probably should have posted request earlier than this morning! 🙄