Easy calling with the landline network

Make calls at home conveniently using your smartphone over your landline telephone numbers - anywhere in the Wi-Fi network of your FRITZ!Box. With the FRITZ!App Fon you benefit from the landline rates; for many providers even from flat rate telephony. HD telephony provides for crystal clear voice quality. Thanks to support for Bluetooth headsets you can enjoy complete flexibility for everyday calling and for working from home. The latest technologies mean that the FRITZ!App Fon works invisibly in the background no matter what the battery status.

The FRITZ!App Fon guides you through the easy Configuration. Simply log in by entering your FRITZ!Box password, selecting one of your landline telephone numbers, and them confirm: your smartphone is ready for landline telephony. Once it has been configured, the FRITZ!App Fon makes your smartphone ring immediately for incoming calls, just as if it were a FRITZ!Fon, the intelligent all-rounder for your home network with FRITZ!. Incoming calls ring simultaneously on your telephones and smartphones. You decide which device should pick up the call. If you would like your smartphone to ring only for certain landline telephone numbers, select only these numbers in the settings of FRITZ!App Fon.

The FRITZ!App Fon is the ideal telephony extension for your FRITZ!Box. Be it a handset for the new roommate in your shared apartment, an additional telephone for working from home, or the convenience of the smartphone that's always handy: with the FRITZ!App Fon you always have a practical solution in no time at all. It is easy to use the FRITZ!App Fon on multiple smartphones.

FRITZ!App Fon functions at a glance

Makes telephone calls over the landline with your smartphone
Top voice quality thanks to HD telephony
Supports Bluetooth headsets
Accesses the telephone books on the FRITZ!Box and smartphone contacts
Displays the names of known contacts during calls

From version FRITZ!App Fon 2.9.0:

- NEW: Blocking and unblocking of telephone numbers in the call list and telephone book
- Improved: The app language can be changed in the system settings (with Android 13 or higher, under "System / Languages & Inputs / App Languages")
- Fixed: The app ignored "Do Not Disturb" mode so that incoming calls were not suppressed

(Android 7.0+)
Latest: 2.5.3 on March 30, 2022
(Android 8.0+)
Latest: 2.9.0 on April 30, 2023
All versions
FRITZ!App Fon 2.9.0
April 30, 2023


Uploaded:April 30, 2023 at 7:26AM UTC

File size:26.33 MB


FRITZ!App Fon 2.8.0
January 23, 2023


Uploaded:January 23, 2023 at 2:17PM UTC

File size:26.3 MB


FRITZ!App Fon 2.7.0
November 14, 2022


Uploaded:November 14, 2022 at 3:33PM UTC

File size:26.89 MB


FRITZ!App Fon 2.7.0 (21530) BETA

Version:2.7.0 (21530) BETA

Uploaded:September 6, 2022 at 3:10AM UTC

File size:26.78 MB


FRITZ!App Fon 2.6.1
June 30, 2022


Uploaded:June 30, 2022 at 4:22PM UTC

File size:23.56 MB


FRITZ!App Fon 2.6.0
May 12, 2022


Uploaded:May 12, 2022 at 2:52PM UTC

File size:23.53 MB


FRITZ!App Fon 2.6.0 (21455) BETA

Version:2.6.0 (21455) BETA

Uploaded:May 6, 2022 at 9:19PM UTC

File size:23.53 MB


FRITZ!App Fon 2.6.0 (21449) BETA

Version:2.6.0 (21449) BETA

Uploaded:April 30, 2022 at 6:03AM UTC

File size:23.58 MB


FRITZ!App Fon 2.5.3
March 30, 2022


Uploaded:March 30, 2022 at 11:25PM UTC

File size:23.56 MB


FRITZ!App Fon 1.90.10
April 2, 2020


Uploaded:April 2, 2020 at 5:04AM UTC

File size:5.11 MB