I'm using a Galaxy S8 and all three connect as soon as I can get the app open.
Turn on Anafi
Turn on SC3, once solid blue light is on
turn location on your phone, plug SC3 into phone, app should open automatically. If not, open FF6
FF6 should show all connected . Go through your preflight checks, fly....
Upon any firmware update. I uninstall FF6 power off for about a minute, reboot.
Reinstall FF6, update SC3, Anafi. Preflight checks, fly.
I have three Anafi's but only two SC3.