I'm just sharing some information about SIM cards. I needed a high-speed, unlimited data SIM card for working from home. At the AIS shop in a nearby shopping mall, I couldn't sign up for the 1199 baht 5G MAX unlimited plan. However, I was able to sign up at the AIS shop in Siam Paragon. It seems that because there are relatively few users of the DTV visa itself, there are differences between shops. By the way, with TRUE, I was told that I would need to buy a new tourist SIM every month, which wasn't practical.