I opened Bangkok bank account in Nana branch with a certified copy of my passport (got it done at British Embassy) on visa exempt, very easy to do just needed a Thai number, I actually used hotel as my address.
This is limited to a savings acc so you can't use the app but you can you get a master card issued for online transactions.
yes I was surprised but I can confirm first hand as I was released on 22nd Dec with no further tests, was given my clearance cert and Dr actually came out to shake my hand (all interaction had been via phone in hospital room). Then put in a taxi to airport and home to Krabi