FRITZ!App reports "No wireless connection has been established"
Although you configured FRITZ!App Fon according to our guide, you cannot conduct calls over a VPN connection. FRITZ!App Fon displays the message "FRITZ!Box cannot be reached. No wireless connection has been established". The app functions properly as soon as you establish a wireless connection.
Enabling mobile data
- Open the iOS settings.
- Tap "Mobile Data".
- Enable the option "Use Mobile Data" for FRITZ!App Fon.