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- Cannot make outgoing calls
- FRITZ!App Fon does not ring when you receive a call
- Setting up a Wi-Fi connection to the FRITZ!Box
- Answering calls from the lock screen
- Blocking your telephone number from being displayed
- Downloading FRITZ!Apps without using the Google Play Store
- Exporting smartphone contacts to a FRITZ!Box telephone book
- FRITZ!App Fon reports "Access to contacts denied"
- FRITZ!App Fon reports "The FRITZ!Box used does not support FRITZ!App Fon"
- FRITZ!App reports "No wireless connection has been established"
- Parties cannot hear each other
- Poor voice quality when conducting calls
- Setting up FRITZ!App Fon
- Shutting down background processes
- Telephony devices and voice computers cannot be remotely controlled