Quote Originally Posted by harrybarracuda View Post
If you're intending to flip between the two, get a Thai (AIS) SIM and keep it up to date if you haven't got one already. IIRC you can add a month of validity for each Bt10 top up (as in individual top ups, i.e. Bt100 doesn't get you ten months. 10 x Bt10 does).
I was looking at the DTac prepaid eSIM for 2.290 THB (about 65 EUR).
1 year validity.
Pay once and get peace of mind for 1 year.

Quote Originally Posted by harrybarracuda View Post
Whether you can use a Spain account with a foreign number is down to the bank. If you can, no problem, if you can't, get a Spanish Pay-as-you-go SIM and keep it up to date.
Official entities can not be accessed from abroad.

My Pension (Belgium) and other state owned entities (Tax department, etc.) uses the "It's me" application which can not be accessed outside Europe.

In Spain, all the State owned entities uses the "CLave" application which can not be accessed outside of Spain.

My Bank has no problem to be accessed from abroad as it uses their own verification method and this method is accessible from anywhere.

I will need to keep my Spanish Sim "alive", but I will have no access to the state entities outside of Spain/Europe.