Side Sync is nothing new. It's been around since the Galaxy S4 and it works all the way back to the Galaxy S III as long as you're on KitKat 4.4 and above and it's a pretty underrated feature of the Galaxy lineup. You can install Side Sync on a PC or Mac and it allows you to control everything about your smartphone, drag and drop files, open apps, take phone calls, share your clipboard, and click around on a virtual version on your phone, all without root! To get started: Install Side Sync on your Galaxy device from the Galaxy Apps' store or Google Play Store Install Side...
Source: http://www.gsmarena.com/reminder_side_sync_for_the_galaxy_s7_is_pretty_awesome-news-17427.php