A new update has started hitting the Samsung Gear Manager application. The update brings new Auto Switch feature as well as an improved Gear lock function. Using Auto Switch, the Gear S3, S2, and Fit2 can automatically connect to the paired smartphone. On the other hand, Gear lock has been improved so it shows information on the wearable's lock screen. Among other changes, the app now shows cards containing tips related to things like new features and data backup, as well as available watchfaces when you delete one or more. Via
Source: http://www.gsmarena.com/new_samsung_gear_manager_app_update_brings_auto_switch_functionality-news-24303.php