Contact One OS

Customer Support

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Please contact your bank or device manufacturer via telephone, web, or your bank’s mobile application.

Please email or call customer service at:

Toll-Free Customer Service Number:

Please contact your bank or device manufacturer via telephone, web, or your bank’s mobile application.

For OneOS account and app enquiries

Please email our customer service at:

For wallet account (OneCard) enquiries

Toll-Free Customer Service Number:

International Customer Service Number: