A Saphe device must be connected via the Saphe Link app and can not be connected via the phone's Bluetooth list.  This is because the app contains a code, that the device requires to authenticate the connection. 

If you are trying to connect through the app and are experiencing issues, try this guide, which walks you through on how to connect your phone to a Saphe device, as well as some challenges that can sometime arise: How to connect to a Saphe