Device Account Number for TFL (London Transport)

Hello, I need to receive a refund from the transportation services provider and they are asking me for the Full Device Account Number to connect my card to a payment for trip that has been delay. They cannot use the last four digit numbers only - they are asking for the full number. Can someone advise how to access the full number?

iPhone 16 Pro Max, iOS 26

Posted on Jul 14, 2026 2:44 PM

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Question marked as Top-ranking reply

Posted on Jul 15, 2026 6:17 AM

Only your bank can provide that number. The number is on your device, but it’s encrypted and the key to decrypt is with the bank. The key is not stored on your device nor does Apple have a copy of the key.


Please contact your bank’s support team for assistance.

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Device Account Number for TFL (London Transport)

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