What to do if the Xiaomi Watch S3 can add a bank card but cannot be activated?

The Xiaomi Watch S3 supports the NFC function and adding a bank card. If your Xiaomi Watch S3 can add a bank card but cannot be activated, it is likely a problem with the bank rather than the product.
If the Xiaomi Watch S3 can add a bank card but cannot be activated, please refer to the following steps to troubleshoot:
1. Make sure the bank card is activated and the account status is normal;
2. Confirm that your bank card supports Xiaomi Pay or Google Pay (depending on your region);
3. Make sure the bank card has online payment enabled. Some banks could turn this feature off by default and need to turn it on manually;
4. If your bank card cannot be activated, it is recommended to try adding cards from other banks to see if the problem persists.
If you still cannot activate, it is recommended to contact your bank directly, because being able to add but not being able to activate is related to the bank's policy or payment system, not a problem with the watch itself.