Seeking suggestions on mobile services for Thailand where we can keep the same number but not have to pay monthly as we are in Thailand about 6 months per year.

Background; We’ve been traveling to Thailand the last 3 years on various visa types and just got a DTV in December. Yay! We had been topping up our original SIM cards so we had the same phone number all 3 years. However, TRUE/ DTAC just sent notification that this will no longer be possible due to new Thai telco regulation. What are the alternatives?

Thanks!

I will arrive in BKK on November 22nd. Normally I buy a 30 day SIM card from AIS at the airport. This; Because I never stayed longer than 30 days in a row. I then reactivated the card when I return after a month or a few weeks in another country. This time I come with a 6 month visa. So I can (and will) stay 4 months. (interupted halfway by 5 days Kuala lumpur.

Who gives me the best advice for a SIM card with a lot of data for about 4 months or longer?

Here's an "and anything else" query please:

What unlimited data sim card deals do you know of, anything from 2 months to a year? Thanks!