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How to apply backup on Lenovo a3900

To back up Lenovo A3900 mobile applications, find Backup and Restore under the main menu on the desktop, click to enter Backup to SD card, and then check the application for backup.

The specific steps are as follows:

Find Backup and Restore on the desktop main menu;

Click Backup and Restore and select Backup to SD card;

Under Application, check the program software required for backup and perform the backup operation.