How to independently enable roaming on True and Dtac cards and how to keep them as cheap as possible for workers abroad in order to receive SMS?

[Christina]

How to independently enable roaming on True and Dtac cards and how to keep them as cheap as possible for workers abroad in order to receive SMS?

[Mari]

Connect roaming at the operator's office, ask them to transfer you to the cheapest tariff, it is 10 baht / month, this is true. With you, they will throw you 120 baht into your account, an SMS will come about the prolongation for a year. And that's it.