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What can Mobile Contact Backup do for me?
1. When you lost your phone and all contact info of your friends are gone, you can restore your address book by using Mobile Contact Backup.
2. In case you have a new mobile, with Mobile Contact Backup, you can upload your address book from your old mobile and download it to your new mobile easily.

How to use it?
1. Backup: upload your mobile address book to server.
2. Restore: download the data stored to your mobile.

Where is my backup data stored?
1. Your data will be stored in the same server as QQ Synchronization Center.
2. Your backup data associates with the QQ ID linked to Wecaht account. You can go to [Settings] -> [My Account] to check your linked QQ ID.
3. You can also log in to QQ Synchronization Center with the linked QQ ID to view backup data.

How about data security?
1. Mobile Contact Backup applies encryption methods to store your data in the server.
2. Data transfer between the client and server is encrypted with digital certificate.