Update Your Mobile Number for Enhanced Mobile Banking Security

Bangkok Bank requests your cooperation in verifying your mobile phone numbers for security and continued access to mobile banking services at any Bangkok Bank branch. Customers who have not completed identity verification will not be able to use mobile banking services from February 7, 2026.

If customers wish to retain and verify their existing number, or do not update their mobile phone number on the application within the specified time, please contact your nearest Bangkok Bank branch and present the following identification documents:
 

• For Thai nationals:
   

  • National ID card
  • Bank passbook

  Note: Customers with only an e-Savings account may present only national ID card and provide an account number to bank staff.
   

• For foreign nationals:
   

  • Passport
  • Bank passbook
  • Mobile phone service payment receipt

For individual using a mobile number that is not registered under his/her name, the following steps can be taken:
 

• Case 1: Change the registered owner of the mobile number to yourself.
   

  • Step 1: Contact your mobile network provider’s store to request a certificate verifying ownership of mobile number.
  • Step 2: Visit any Bangkok Bank branch to update your mobile number linked to your mobile banking account, and submit identity verification documents.

• Case 2: Request an exemption to continue using a mobile number registered under another person’s name.
  Visit any Bangkok Bank branch and submit identity verification documents, certificate of mobile number ownership from the registered owner, and supporting documents for exemption according to specified conditions

 
In case of using a mobile number of a family member (e.g., father, mother, child, sibling, grandfather, grandmother, or legally registered spouse), please bring
 

• Proof of Relationship, such as documents issued by Thai government agencies or equivalent foreign authorities, such as household registration, birth certificate, marriage certificate.
• Proof of mobile number ownership, such as tax invoice, or mobile service payment receipt.

 
In case individuals who require legal guardianship, such as incapacitated, quasi-incapacitated, or disabled persons, please bring:
 

• Court order documents.
• Disability ID cards or documents issued by government agencies, or documents certified by official authorities.

 
In case of legal entities such as companies, government agencies, or other legal entities recognized by law (where the mobile number is registered under the entity’s name and used by its personnel), please bring
 

• A certificate letter from the legal entity starting the name of the personnel, the mobile phone number, and permission to link the mobile number to mobile banking.

Bangkok Bank sincerely thanks all customers for their cooperation to implement these security measures to ensure the security of financial services. We apologize for any inconvenience this may cause.

For further inquiries, please contact any Bangkok Bank branch or call the Call Center at 1333.