you just need a thai phone number as they will send you an OTP code. You can’t change the number afterwards as you need to close the account and open a new one.
I applied in Taipei and had over 500thb in 4 different bank accounts.
They asked me why I had so many bank accounts and I told them I don’t like having all my money into one. The lady chuckled and agreed with me and passed my information to her supervisor. Was approved within 2 hours.
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