I use the Pixel 7a which allows 2 active sims. I use 2 esims. One with AIS for Thailand and the other with Mint Mobile for my US text and calls. Its been working good for me in Bangkok.
This question gets asked on many groups. It is a requirement to have an onward or return ticket for a 30 day visa exempt stamp. Whether you comply or not is your choice. I choose to follow the law.
I have both esims loaded on my phone. Both work simultaneouly. AIS for my local internet roaming and Mint for all my secure OTP texts. I have my phone set to wifi calling for the Mint esim.