So having the ability to connect to a hotspot with the pioneer radio is an interesting feature. My issue has been that my iPhone deactivates the WiFi after nothing is connected to it for 5-10min.  I thought I figured out a fix by using the “TetherMe” tweak always on feature but still the hotspot shut off.

 

I figured out a way to fix this but again it requires jailbreak.  I used “Activator 1.9.13” and set up to activate the hotspot when I connect to a CarPlay device and then deactivate the hotspot when I disconnect from a CarPlay device. I set up on the pioneer 8600 to auto connect to my phone.  It has worked perfectly and I have not noted any flickering of the monitor picture as of now.