How can Qq Assistant Service Center delete the number in the short message I saved in QQ?

Hello, login, there are two recovery methods: 1, the recycle bin finds the contact card you deleted by mistake, and click the recovery button to restore to the cloud address book. If you want to restore the consistency of your mobile phone, you can enable QQ Synchronization Assistant on your mobile phone, and only select the changed contacts to save the business cards deleted by mistake. ...