FRITZ!Box 6810 LTE Service - Knowledge Base

FRITZ!Box 6810 LTE Service
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LTE connection drops frequently

The LTE connection between your FRITZ!Box and your LTE provider drops frequently (several times a day). When this occurs, the "Power" LED on the FRITZ!Box flashes and stays lit as soon as the internet connection has been re-established. The following error message may be displayed in the event log of the FRITZ!Box:

"LTE no longer responding"


  • The stability of the LTE connection depends on the distance from the LTE base station and the shielding effect of the walls of your own house. It can also be affected if the LTE antennas were not properly connected or if your LTE provider is experiencing technical difficulties.

Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.

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

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 there are any events that occurred before the error did, or whether only events that occurred after the error are shown.
  4. If events that took place before the error occurred are also shown, proceed with the following section:

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

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

3 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 LTE antennas:

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Account Information" in the "Internet" menu.
  3. Select the frequency band "Only 2.6 GHz / band 7". If the option is not displayed, enable the Advanced View first.

    Note:Normally you can achieve a higher data throughput with the 2.6 GHz frequency band than with the 800 MHz frequency band.

  4. Click "Apply" to save the settings.
  5. Click "LTE Information" in the "Internet" menu.
  6. Click on the "Reception" tab.
  7. Click the "Start Alignment Aid" button.
    • Now the FRITZ!Box shows the signal strength of both LTE antennas.

      Note:When the alignment aid is active, the current signal strength is also displayed in a five-level display on the FRITZ!Box LEDs. This means that you can also find the best location for the FRITZ!Box without using the FRITZ!Box user interface.

  8. Select a location for the FRITZ!Box where the value shown is as high as possible. When doing so, note the following:
    1. Do not set up the FRITZ!Box in the corner of a room.
    2. Position the FRITZ!Box as close to an outside wall as possible. If you know where your provider's LTE radio cell is located, position the FRITZ!Box by the wall facing the LTE radio cell.
    3. Position the FRITZ!Box so that it is as unobstructed as possible, i.e. not directly in back of or under an obstacle (for example pieces of furniture, heater).
  9. If the quality of the LTE connection in the 2.6 GHz frequency band is not sufficient:
      1. Click "Account Information" in the "Internet" menu.
      2. Select the frequency band "Only 800 GHz / band 20".
      3. Click "Apply" to save the settings.
      4. Click "LTE Information" in the "Internet" menu.
      5. Click on the "Reception" tab.
      6. Start the alignment aid and repeat the adjustment procedure for the FRITZ!Box.

4 FRITZ!Box is unsuitable for use in LTE outdoor coverage area

If you are using the FRITZ!Box in an area located on the edge of the LTE radio coverage area (outdoor coverage area) of your LTE provider, then the internal LTE antennas may not be sufficient for an LTE connection. Therefore, the FRITZ!Box cannot resolve this issue.

Note:Some FRITZ!Box models allow you to connect an outdoor antenna (for balcony or roof, for example). These models are suitable for use in outdoor coverage areas. Refer to our sales team for information on these models. Your LTE provider can tell you whether you are using the FRITZ!Box in their indoor or outdoor coverage area.