What does Renren's 4S use to back up the address book?

There are generally two options for backup: backup to your own computer or backup to the Internet.

Back up to your computer first, the method is: 1. Export the phone address book as a CSV file. If your mobile phone doesn't have this function, you can use the PC suite of your mobile phone or third-party software to export it, or use related software to convert the address book files in other formats exported by your mobile phone into CSV files (as for how to export or convert them, please search online, and there should be a tutorial for your mobile phone online). 2. Download a software-KEN is a free office platform and install it on your computer. Then, after logging in with Kenvini's account, import the prepared address book file in CSV format exported from the mobile phone to Kenvini's free office platform. In this way, you have a very easy-to-use computer address book (also a backup), which can be viewed, edited, modified and added in the computer more conveniently, which is much more convenient than the mobile phone. 3. If necessary, you can export the address book file in CSV format from this platform again according to your own mobile phone format, and then import it by using the function of the mobile phone, or import it to the cloud for synchronization.

Second, backup to the network-cloud 1. Export a CSV address book file suitable for the cloud from Kenway's free office platform (there are two options of Gmail and QQ synchronization assistant). 2. Log in to the cloud from the computer, such as Gmail account or QQ synchronization assistant, and click "Import Contacts" on the page to import this CSV file into the cloud, which is the online address book; 3. Then you can edit or synchronize your mobile phone's cloud address book.

If your mobile phone supports the cloud, you can also back up the cloud directly on your mobile phone, but it is not as convenient as a computer, and it is slow and consumes traffic.

To sum up, you can convert the phone number backed up by your computer into an address book file in CSV format, then import it into Gmail and QQ synchronization assistant, and then you can synchronize your address book with your mobile phone.