My Garmin 820 won’t connect to iphone. Seems the last update took away these capabilities. The only way I can upload is by connecting to the laptop. I bought this unit specifically for it’s instant upload capabilities now it is only as good as my old unit and I feel I have wasted my money buying it.
Have you tried to go to your Bluetooth settings (on your phone) and choose “forget device” and then pair again? You can also remove the device from GC app and then pair it again.
