Follow these steps to determine which Sonicare toothbrush is connected to the app. First, make sure that you have turned on Bluetooth on your mobile device.

1. Open the Sonicare app and go to the menu in the top left corner.
2. Turn on your Sonicare toothbrush
3. The handle that is connected will start the guided brushing and the two-minute timer will begin to countdown
4. If you have a handle that is not connected to the app, there will be a red bar that drops downs indicating there is no toothbrush connected