DangerRuss

I remember, when I went to the bank to explain loosing access to tge k app, i saw the bank manager open the app and use a backdoor feature. She then looked at her badge ID # and she then inputted her credentials and after a couple seconds the phone buzzed and a text arrived. She did a bunch more inputs and log-ins and eventually we had access again.

I too had DTac sim card. That isn’t the problem. i bought a new iphone last year in the states and downloaded tge k-app and it wouldn’t work on tge bew phone. So, i tried to go back to tge old phone, but aftertrying on the new phone, the k app blocked me until i was able to return back to thailand. I currently using my Verizon usa sim and works fine with my k app on the mobile. It’s not about tge sim…it’s more to do with the original k app that is registered and usable on the phone that was given permission to log in. Once you switch phones…if you try and switch phones without the assistance from a k bank rep…you will be locked-out until you can return back yo Thailand

I too have a K-bank account and can state emphatically that when you switch/have a new phone, you must register and sign onto the new acct/new phone by doing so at the K- Branch the first time you want to use a new device. I too tried everything that everyone listed in the comments, those don’t work. You must do so at a K branch/bank.