FRITZ!App Fon Service - Knowledge Base
FRITZ!App Fon rings although "Do Not Disturb" is enabled
FRITZ!App Fon rings when you receive a call, although you enabled the "Do Not Disturb" mode in the iOS settings and the moon symbol is displayed in the status bar of the smartphone.
1 Mode is not supported
FRITZ!App Fon does not support the "Do Not Disturb" mode. As an alternative, you can use the "ring/silent" switch on the smartphone to temporarily turn off the ring tone for FRITZ!App Fon.