FaceTime hangs up after 20 seconds

Hello,

help from Apple Support and works for me:

1. Switch off Facetime and iMessages.
2. Reboot.
3. Settings -> General -> Reset -> Reset Network Settings (will delete all wifi networks and passwords).
4. Reboot.
5. Switch on Facetime and iMessages.
6. Reboot.
7. Done.

Bye,

Michal

Same here in Suriname, South America on the 28th of February 2019.

Same here France.