1) Go “Settings”.
2) Touch “System”
3) Touch “Backup”.
4) Activate “Back up to Google Drive” in the open window.
5) Touch “Back up Now”
* App data, SMS text messages, Device settings, Call history, Contacts will be backed up.
For more back up & sync help, please continue touch “Google Photos”->”Back up & sync help”.
b. You can also transfer content from your phone to another one, to back up data. Go “Settings”->”Advanced features”->”Switch Phone”, a series of screens will lead you through the data transfer process.