There is some time I wanted to create this video explaining how to create bluetooth connections in Plasma NM using Bluedevil-1.2. Here it is:
Bluetooth tethering is not exactly new feature in Plasma NM, it was added almost seven months ago, yet some people still have difficult adding connections.
Unfortunately for devices that use NAP, like iPhone, there is a bug in Bluedevil that prevents Bluedevil from dectecting the NAP service from the phone. For now you can use networkmanagement_configshell to create a NAP-type bluetooth connections. Bluedeveil-1.2 works for DUN-type connections, like it is shown in the video.