Backup Android Contacts using Google Cloud Sync This will also allow you to access contacts on your desktop and across all your synced devices. The best and most efficient way to backup Android contacts is to sync them with your Google account. The first thing that you would never like to lose is your personal contacts and messages. How to Backup Android Phone Completely 1. For every different type of data, we will try to provide you the most effective options to get the job done. So here’s an all-around tutorial to help you backup Android devices completely, from apps to complete firmware, we have got you covered.
