FRITZ!Box 6590 Cable Service - Knowledge Base

FRITZ!Box 6590 Cable Service

Setting up FRITZ!Box for internet access via the mobile network (LTE/UMTS)

If you use an additional mobile broadband dongle with the FRITZ!Box, the FRITZ!Box can also connect to the internet using the mobile network and then provide internet access to all computers in the home network.

Note:If you do not have a mobile broadband dongle, you can also configure the FRITZ!Box to use the mobile internet connection of an Android smartphone (USB tethering).

Requirements / Restrictions

  • The mobile broadband dongle must support the mobile standard LTE (4G) or UMTS/HSPA (3G).
  • The mobile broadband dongle must support the AT command set or USB tethering.
  • Depending on the mobile network operator, internet telephony and all other functions for which a public IP address is required (for example incoming VPN connections) are either available or available only to a limited extent.

1 Connecting a mobile broadband dongle to the FRITZ!Box

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

    Important:According to the USB specifications, the power consumption of a USB device may not exceed 500 mA. If the dongle requires more than this, use a USB hub with its own power supply (active USB hub) to connect it to the FRITZ!Box. Refer to the manufacturer of the dongle for information on its power consumption.

2 Configuring the FRITZ!Box


  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Mobile Communications" in the "Internet" menu.
  3. If the section "USB Tethering" is displayed, set up internet access via USB tethering.
    • If the section "USB Tethering" is not displayed, proceed with the following section.

Configuring internet access

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Mobile Communications" in the "Internet" menu.
  3. If the mobile network should always be used for the internet connection, enable the option "Mobile connection enabled".
    • If the mobile network should only be used for the internet connection when the cable connection is interrupted, enable the option "Automatically enable the mobile connection when the cable internet connection is disrupted".
  4. Enter the PIN for the SIM card of the mobile broadband dongle in the "PIN" field.

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

  5. Select your provider from the drop-down list "Mobile communications network provider". If your provider is not displayed:
    1. Select "Other operator".
    2. Enter the account information you received from your mobile network operator in the corresponding fields.

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

  6. Click "Apply" to save the settings.

The FRITZ!Box now establishes all internet connections using the mobile broadband dongle connected to it.