It took me awhile to figure out how to get the Q800 my to connect to my car's built in Hotspot. The only way I could do it was to follow this procedure... 1) Set the SSID and Password for my phone's built in Hotspot to the exact same SSID and Password for my car's (Buick Encore) Hotspot. 2) Go into setting on my Buick Encore and turn off the Wireless Hotspot. 3) Follow the procedures in the manual for "Connecting via hotspot" 4) Turn off your car (to turn the Q800 off) 5) Turn off the Hotspot on your phone 6) Turn on your car 7) Go to settings in your car and turn on the in car WIreless Hotspot 8) Within a minute or so if everything went correctly in the above steps you should hear "Connected to the Internet" from your Q800. Change to SSID and Password on your phone's Hotspot back to what you want it to be. Note: to manage the Q800 from your phone after this you will have to Connect via WiFi and not via Hotspot Also Note: If you have previously connected to Q800 via your phone's Hotspot before steps (1-8) above you need to connect via a new connection (not the existing one) and scroll down on that screen on your phone past the existing Q800 connection to the Q800 option listed below. You MUST select the option connecting for the first time.