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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, select your mobile network provider in the user interface, and enter the PIN for the SIM card. 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.

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.
  • The mobile dongle must obtain an IPv4 address from the mobile network operator. The mobile network dongle cannot be used if the mobile network dongle obtains an IPv6 address.
  • 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

Preparations

  1. Click on 'Internet' in the FRITZ!Box user interface.
  2. Click on 'Mobile Network' in the 'Internet' menu. If the tab is not displayed, follow the steps in our guide FRITZ!Box does not detect a mobile network dongle.
  3. If the 'USB Tethering' section is displayed, set up internet access via USB tethering.
    • If the 'USB Tethering' section is not displayed, continue with the next section.

Configuring the FRITZ!Box

  1. Click on 'Internet' in the FRITZ!Box user interface.
  2. Click on 'Mobile Network' in the 'Internet' menu.
  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 only be used for the internet connection when the DSL connection fails, enable the option 'Connect to the internet using the mobile network only when the DSL connection fails'.

      Note:Once the DSL connection has been stable and available again for 30 minutes, the FRITZ!Box clears the connection to the mobile network and switches the internet connection back to DSL.

  4. Enter the PIN for the SIM card of the mobile dongle in the 'PIN' field.

    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. Select your provider from the 'Mobile communications network provider' 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 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.