After cleaning up the storage, only the cached data in the list of common contacts is lost, and the common contacts are empty. You can click on the address book below WeChat to find your friends.

When binding a bank card, you need to verify the cardholder's real name information, that is, name and ID number information. A micro-signal can only bind one real-name information. The real name information cannot be changed after binding, and the real name binding relationship will not be deleted when unlocking the card. The same ID number can only be registered for 10 (including 10) WeChat payment. A bank card (including credit card) can bind up to 3 micro signals. A micro signal can bind up to 10 bank cards (including credit cards). Only one payment password can be set for a WeChat account. There is no need to open online banking for bank cards (except Bank of China and Industrial and Commercial Bank of China). As long as there is a reserved mobile phone number in the bank, you can bind WeChat payment. Once the binding is successful, the micro-signal cannot bind the bank card/credit card with other names. Please be careful.