Mobile Communications

Internet / Mobile Network

The FRITZ!Box can also make the internet connection available via a mobile network connection. The mobile network connection can be established with the following mobile communications devices:

  • via a USB mobile communications dongle in modem operation with LTE/UMTS/HSPA support
  • by a mobile communications dongle in USB tethering mode
  • by a smartphone in USB tethering mode (only smartphones with Android 4.1 or higher)

Note:The "Internet / Mobile Communications" menu is visible in the user interface of the FRITZ!Box only when a mobile communications device is inserted in a USB port on the FRITZ!Box.

Click on the "Apply" button to save your settings. If you leave the page without saving, all of your changes will be discarded.

If the FRITZ!Box connects to the internet over the mobile communications network, it depends on the mobile carrier whether the following FRITZ!Box functions can be used:
- Internet telephony
- incoming VPN connections
- other connections requiring a public IP address

Select how the internet connection via a mobile network should be used. Choose from the following options:

Internet connection via mobile communications enabled

Select this option if the internet connection should be established via the mobile network.

Note:If you want to use the online counter of the FRITZ!Box for the mobile communications connection and have used a different internet connection to date, reset the online counter in the "Internet / Online Monitor" menu.

Connect to the internet using the mobile communications network only when the DSL connection fails

Select this option if the internet connection should automatically be established via the mobile network only when the DSL connection is lost. As soon as the DSL connection is stable and available for at least 30 minutes, internet access will be switched back to the DSL connection.

Internet connection via mobile communications disabled

Select this option if the mobile network connection should not be used for connecting to the internet.

Registration with the Mobile Communications Network


Enter the PIN of the SIM card of your mobile broadband dongle.

Allow roaming

Enable this setting if you want to allow the FRITZ!Box to log into mobile communications networks of other mobile network providers.

Network Availability

The table presents information on the mobile network connection:

Table ColumnInformation
The symbol shows the signal strength of the mobile network connection. The more bars are green, the better the connection quality.
Status The status of the mobile network connection is displayed.
Mobile Communications Network The name of the mobile communications network is displayed.
Data Transmission Link to the Online Monitor. The data transmission rates are shown in the Online Monitor.


A click on the "Refresh" button updates the display in the "Network Availability" table.

Internet Connection

Enter the account data for the internet connection via the mobile communications network. You received the account information from your mobile network provider. The data in the fields are predefined for some mobile network providers. If you have a different mobile network provider, enter the account information you received from the mobile network provider.

Mobile communications network provider

Select your mobile network provider. If your mobile network provider is not included in the list, select the "Other provider" entry.

Access point Enter the access point.
Access number Enter the access number for the mobile communications network.
User name Enter your user name.
Password Enter your password.
Password confirmation Enter your password.


Automatic Disconnection

If your mobile network contract is billed according to online time, then you can have the internet connection cleared automatically whenever no connected network device is actively using the internet connection. This saves you online charges.

Clear automatically after

Select this option if an idle internet connection should be cleared automatically, and enter the time after which it should be disconnected.

Do not disconnect automatically

Select this option is your rate is not charged according to online time. Then the FRITZ!Box is always connected with the internet. If your internet service provider clears the connection every 24 hours, then FRITZ!Box restores the connection immediately.

Note:For information about connection costs, data volume and other contract data, contact your mobile communications network provider.


Internet Telephony via the Mobile Internet Connection

If you registered internet telephone numbers in the FRITZ!Box "Telephony / Telephone Numbers / Telephone Numbers" menu, then you can use the internet telephone numbers via the mobile network connection.

Use internet telephony via the mobile internet connection

Enable this setting if you want to use your internet telephone numbers for connecting to the internet via the mobile network.

Important:The use of internet telephony may be technically prevented or legally prohibited by the mobile network provider. Contact your mobile network provider for more information on this subject.