My wife has an account with Kasikorn and is living with me outside Thailand with no access to her Thai phone number (we changed phones and lost the old sim, but still had access to the original phone that mobile banking was set up on, so it still allowed access).
We set up mobile banking and it worked fine for years, but one day, the app required an update to be installed or it would not let us login. After that update was installed it required us to set up mobile banking again. The only way to do this is at an ATM.
We called Kasikorn and they said they couldn't help us, nor reset her internet banking password, as we need to go to a branch or have access to the same phone number and get an SMS, so now we have no access to any money. Because of the COVID pandemic, we couldn't travel back to Thailand, so we have lost access to this money for the past 2 years. You would think that calling and providing all sorts of personal verification details to the support person over the phone would allow some access, but this isn't the case. They can't do anything without coming into a branch!
Also, last time we were in Thailand, we went to a Kasikorn branch and requested that we be given access to internet banking and they didn't know how to do this for us. We spent hours there with the staff making several phone calls to other branch managers and got nowhere.
All of the above has soured our experience with Kasikorn.
We will be going back to Thailand soon with the borders finally opening up and would like to open an account with a bank that has good mobile and internet banking that we will be able to properly manage overseas without having access to a phone number (or a decent support system that will allow us to change this number to an international number over the phone if any SMS verification was needed).
The requirement to go to a branch and have access to a phone number in Thailand to access internet banking is unreliable if living outside Thailand as anything can happen to a phone or sim.
What bank do you recommend that will allow reliable overseas access, preferably with the ability to change the verification to an overseas number (after providing enough verification details)?