I could stream wifi to my phone direct from the gpro.
I used my friends go pro and got the same result.
tried using my iphone 6 and galaxy tab s 8.4, same result.
Even borrowed his micro HDMI to full hdmi right into my tv from the gopro, and that told me its the solo.
If you have the means like I did, test everything else. Byt the time i was done i know it was the solo, and 3dr said it was the cable. Offered to RMA the device. So i would send it in they would repair and send back in 3-4 weeks total time. I wasn't gonna wait.