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Knowledge Base document #76

Setting up the FRITZ!Box for use with a mobile network

With an additional mobile dongle, the FRITZ!Box can also establish the internet connection via the mobile network. Connect the mobile dongle to into the FRITZ!Box and select your mobile network provider in the user interface. If the SIM card is protected with a PIN, enter this as well. The complete FRITZ!Box range of functions for internet, telephony, and multimedia is then available to all of the devices in your home network without restriction.

Note:The FRITZ!Box can also connect to the internet via a mobile network router connected to it using a LAN cable. If the mobile network connection is only to become active when the regular internet connection fails, proceed as described in Configuring failover protection for the internet connection in the FRITZ!Box or – if it is to be used permanently – as described in Setting up the FRITZ!Box for use with another router.

Requirements / Restrictions

  • The mobile dongle must support the mobile standard 4G (LTE) or 3G (UMTS/HSPA).

    Note:The 3G mobile network (UMTS/HSPA) has been switched off in Germany and many other countries.

  • The mobile dongle must support the AT command set or USB tethering.
  • IPv6 is only supported by mobile network dongles that support MBIM (Mobile Network Interface Model). Mobile network dongles that do not support MBIM can only be used on the FRITZ!Box if they obtain an IPv4 address from the mobile network operator.
  • Depending on the mobile network operator, functions for which a public IP address is required (for example incoming VPN connections) are either not available or only available to a limited extent.

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

1 Connecting a mobile dongle to the FRITZ!Box

  1. With the SIM card inserted, connect the mobile dongle to a USB port on the FRITZ!Box.

2 Configuring the internet connection in the FRITZ!Box

  1. Click on 'Internet' in the FRITZ!Box user interface.
  2. Click on 'Mobile Network' in the 'Internet' menu. If the 'Mobile Network' menu is not displayed, follow the steps in our guide FRITZ!Box does not detect a mobile network dongle.
  3. If the mobile network should always be used for the internet connection, enable the 'Internet connection via mobile network enabled' option.
    • If the mobile network should be used for the internet connection when the internet connection fails, enable the 'Failover Protection via Mobile Network' option.
  4. If the 'PIN' field is displayed, enter the PIN for the SIM card in the mobile dongle.

    Important:If you enter the wrong PIN three times, you must enter the PUK. Your mobile network operator can give you information on the PIN or PUK.

  5. If the 'mobile network operator' drop-down list is displayed, select your provider from the drop-down list. If your provider is not displayed, select 'Other operator' and enter the account information you received from your provider in the corresponding fields.

    Note:You cannot change the account information for preconfigured mobile network operators.

  6. Click on 'Apply' to save the settings.

3 Configuring the mobile dongle

The following steps are only necessary if a link to the user interface of the mobile dongle is displayed in the FRITZ!Box user interface under 'Internet > Mobile Network'.

  1. Click on 'Internet' in the FRITZ!Box user interface.
  2. Click on 'Mobile Network' in the 'Internet' menu.
  3. Click on the link to the user interface of the mobile dongle.

    Note:You can also use the mobile dongle's IP address to directly access its user interface, for example via http://192.168.10.20.

  4. Enable internet access in the mobile dongle by entering the PIN for the SIM card in the user interface of the mobile dongle. You can find information on configuring the mobile dongle in its manual, or consult its manufacturer directly.
  5. If you received account information for internet access from your mobile network operator, enter the account information in the mobile dongle.

4 Configuring failover protection in the FRITZ!Box

The following steps are only necessary if you enabled the 'Failover Protection via the Mobile Network' option:

  1. Click on 'Internet' in the FRITZ!Box user interface.
  2. Click on 'Account Information' in the 'Internet' menu.
  3. Click on the 'Failover Protection' tab.
  4. Enable the 'Enable failover protection' option.
  5. Select 'USB' from the 'Failover device connected to' drop-down list.
  6. Enable the time after which you want to switch to the failover protection connection, and the time after which you want to return to the regular internet connection.
  7. Click on 'Apply' to save the settings.

5 Setting up telephony in the FRITZ!Box

If you are using a SIM card with a mobile phone number and the mobile dongle supports 'CSV' (Circuit Switched Voice), you can configure the mobile phone number in the FRITZ!Box and assign it to the phones connected to it.

  1. Configure the mobile phone number in the FRITZ!Box.



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