BYOD was part of my problem. It worked fine for years - during the long 'beta. But once BYOD went mainstream, my service went to hell.

My problem; (incoming calls having no audio), has finally been mitigated, by moving me to different SIP server. It's not a new/unknown problem. But it took multiple weeks to re-home me to another SIP server. Too. Damn. Long. Frankly; I had given up hope and the begun to shift to GV.

Based on my experience, I am no longer able to recommend VoIPO to others ... and I used to be a vocal supporter.