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Knowledge document #3336
FRITZ!Box 6860 5G
This support document is available for the following products:

Mobile network connection drops frequently

The mobile network connection between your FRITZ!Box and your mobile network provider drops frequently (several times a day). During this time, the Power/Mobile LED on the FRITZ!Box flashes and then stays lit as soon as the internet connection is re-established. The following error message is displayed in the event log of the FRITZ!Box:

"LTE no longer responding"

Cause

  • The stability of the mobile network connection depends on factors such as the distance from the mobile station and the shielding effect of the walls of your own house. It can also be affected if your mobile network provider is experiencing technical difficulties.

Simply proceed as described below. After each measure, check whether the problem is solved.

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

1 Checking the event log of the FRITZ!Box

  1. Click "System" in the FRITZ!Box user interface.
  2. Click "Event Log" in the "System" menu.
  3. Check whether events also took place before the time when the error occurred, or whether only events are shown that took place after the error occurred.
  4. If events are also displayed that took place before the time the error occurred, proceed with the next section.

2 Installing the latest FRITZ!OS for the FRITZ!Box

Installing the latest FRITZ!OS makes your FRITZ!Box compatible with the latest mobile network technology used by mobile network providers in their radio cells:

  1. Install the latest FRITZ!OS on the FRITZ!Box.

3 Selecting the type of mobile network

Depending on your mobile network provider and contract, if there are several radio cells at your location, you may need to manually select the desired type of mobile network in the FRITZ!Box:

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Account Information" in the "Internet" menu.
  3. In the section "Type of Mobile Network" ("Type of mobile communication"), enable the option "Manual" and disable the options "3G (UMTS / HSPA+)" and "4G (LTE)".
  4. Click "Apply" to save the settings.
  5. If you are now no longer able to connect to the mobile network, re-enable the options "4G (LTE)" and "3G (UMTS / HSPA+)" after each other and use the type of mobile network with which the FRITZ!Box achieves the highest throughput.

4 Finding the ideal location for the FRITZ!Box

You can use the alignment aid to find the ideal location for the FRITZ!Box and the best position for the mobile network antennas:

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "LTE Information" in the "Internet" menu.
  3. Click on the "Reception" tab.
  4. Click the "Start Alignment Aid" button.
    • Now the current signal strength of the antennas is displayed by the LEDs on the FRITZ!Box and in the user interface.
  5. Select a location for the FRITZ!Box where the signal strength is as high as possible.
  6. If you are using the FRITZ!Box indoors, note the following when positioning it:
    1. Place the FRITZ!Box as close to an outside wall as possible or attach it to the inside of a window. If you know where your provider's radio cell is located, position the FRITZ!Box by the outside wall facing the radio cell.
    2. Select a location for the FRITZ!Box that is free from obstacles, sources of interference, and heat that is about one meter above the ground.
    3. Do not set up the FRITZ!Box in the corner of a room.
  7. If you are using the FRITZ!Box outdoors, note the following when positioning it:
    1. Use the router bracket for outdoors to attach the FRITZ!Box to an outer wall (for example in the window reveal) or attach it from outside to a window.
    2. Mount the FRITZ!Box at a location that is about one meter from the ground that is protected from lightning, strong wind, and from unauthorized access.
    3. Do not mount the FRITZ!Box in places where people could be injured, for instance, by the device falling down.
    4. Do not expose the FRITZ!Box to direct streams of water and do not mount it on the weather side of the house.
    5. If you mount the FRITZ!Box on a window or a window reveal, make sure that the window weep holes are clear and that the window seals are suitable for mounting. No moisture may enter the power adapter via the cable.

      Note:The FRITZ!Box is dust and splash-protected according to protection class IP54 and suitable for use in protected outdoor areas.

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