Jin Tou Wang·2025-09-18 02:36Group 1 - The announcement from Bank of China states that it will upgrade the functionality of existing Mastercard single-branded credit cards on November 2, 2025 [1] - The upgrade applies to specific Mastercard credit cards with designated first six digits, which are listed in the provided table [2] - From November 2, 2025, the upgraded credit cards can be linked to third-party payment wallets for transactions in RMB within mainland China, while cross-border transaction functionality remains unchanged [2] Group 2 - The self-service operation path for the transaction payment lock is available through the Bank of China app, allowing users to customize their card locking settings [3] - The WeChat official account of Bank of China also provides options for card binding and payment security lock configuration [4] - Upon card renewal, replacement, or loss, the upgraded credit cards will be issued with dual application functionality and contactless transaction chip technology, with fees remaining unchanged [4]