Please follow the steps below to link bank cards:

1. Tap Me > Pay and Services > Wallet, in Wallet, tap Bank Cards;

2. Tap Add a Bank Card and follow the instructions to link credit cards or debit cards.

Please follow the steps below to unlink bank cards:

1. Tap Me > Pay and Services > Wallet, in Wallet, tap Bank Cards;

2. Select the card you want to unlink and tap it into the detail page;

3. Tap "..." menu on the top right corner;

4. Tap Unlink at the bottom of the page to unlink the bank card.