Echo needs to be in the foreground of your phone to establish a connection. Once connected, it can run in the background. 

How to connect

1. Open Echo on your phone. Tap to start so it says, 'Waiting to connect'
   
2. On your Concept 2, find and select the Menu button > More Options > Connect Heart Rate
   
3. Connect to 'ECHO HR' that pops up on the screen

3. Once connected, Echo on your phone will change from 'Waiting to connect' to displaying your heart rate bpm in real-time