I never used online banking in all my time there or overseas back home...so doubt I can use it without my Thai SIM which has deactivated.
I have sent the odd amount to the account over the last year and I'm trying to send some money overnight to see if it does not bounce back to my UK account.
It is just with all the aggressive Bangkok Bank account shut-downs in the news... coming in on a tourist visa soon, I will need to use it again for inbound money....as I won't be able to open a bank account on a tourist visa in Chiang Mai easily vs 10 years ago.