How do I unpair my Smartwatch from my phone? Open the Wear OS by Google app and scroll down to Advanced Settings. Tap the Forget Watch button at the bottom of the screen to disconnect and reset your device. Remove the smartwatch from your phone’s Bluetooth settings. Related articles Why can't I pair my Smartwatch to my phone? How long does each battery mode last? I forgot the passcode I set to my Smartwatch and am locked out. How do I fix this?