Talk:Thailand/@comment-109.204.231.126-20180509063547/@comment-24324549-20180517055637

Seems there is some confusion one the validity issue, and there is some incorrect info in the responses to this question.

I made a quick Youtube video to show how to do it. ( AIS SIM2Fly with 0 Baht getting 120 days of validty for 40 Baht )

Every 10 Baht top up gives you 30 Days. If you do 3 of them, you've added 90 days. 6 of them, and add 180 Days. You could spend 120 Baht and get 360 days. You can be valid up to 1 year.

Bottom line, it's quite cheap to keep your Thai SIM valid, and really no reason to buy a SIM2Fly each time. (unless you loose it.)  Any balance added can be used for the data package on your next trip.

Hope that clears things up. :-)