FRITZ!Box 4020 Service - Knowledge Base

FRITZ!Box 4020 Service

Wi-Fi connection drops frequently

You're having problems with your Wi-Fi? The Wi-Fi connection keeps dropping? ✔ Here's how to solve your connection problems.

The Wi-Fi connection to the FRITZ!Box or a FRITZ!Repeater, FRITZ!Powerline adapter, or an additional FRITZ!Box in the FRITZ! Mesh drops frequently.

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 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, continue with the next section:

2 Installing the latest software for the wireless devices

New software versions include adjustments for new Wi-Fi standards and bug fixes. Therefore, install the latest software on all of the wireless devices:

Installing the latest FRITZ!OS for the FRITZ!Box

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

Installing the latest software for the wireless device

  1. Install the latest software version for the wireless device (for example Android, iOS) or the latest driver for the computer's wireless network adapter (for example using Windows Update).

    Note:Information on the update can be obtained from the device's manufacturer, for example refer to the manual. You can find the latest drivers for the FRITZ!WLAN Sticks in our download area.

3 Optimizing the FRITZ!Box's Wi-Fi settings

In the factory settings, the FRITZ!Box evaluates the Wi-Fi environment and the quality of the connection of the wireless devices connected to it on a regular basis and then automatically selects the current ideal Wi-Fi channel settings. If you disabled the automatic adjustment of Wi-Fi channel settings, enable it again:

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Enable the option "Set radio channel settings automatically (recommended)".
  4. Click "Apply" to save the settings. Now Wi-Fi connections to the FRITZ!Box are briefly cleared and then automatically re-established.

4 Optimizing the Wi-Fi Mesh settings

The following steps are only necessary if you are using a FRITZ!Repeater, a FRITZ!Powerline adapter with wireless support, or an additional FRITZ!Box to extend the Wi-Fi of your FRITZ!Box:

Checking whether the Mesh Repeater is integrated into the Mesh

  1. Click "Home Network" in the FRITZ!Box user interface.
  2. Click on "Mesh Networking" in the "Home Network" menu.
  3. If a FRITZ!Repeater, FRITZ!Powerline adapter with wireless support, or an additional FRITZ!Box is not marked with the Mesh symbol in the Mesh overview, follow the steps given in the corresponding guide:

Enabling the adoption of Mesh settings

  1. Click on "Access to Home Network" in the user interface of the Mesh Repeater. If you are using a FRITZ!Box as the Mesh Repeater:
    1. Click "Home Network" and then "Mesh".
    2. Click on the "Mesh Settings" tab.
  2. Enable the option "Adopt settings enabled".
  3. Click "Apply" to save the settings.

5 Finding the ideal location for wireless devices

Finding the ideal location for the FRITZ!Box

  1. If possible, place the FRITZ!Box in a central location. FRITZ!Box has omnidirectional antennas. The wireless signal is therefore emitted spherically in all directions.
  2. Do not place the FRITZ!Box directly in the corner of a room.
  3. Place the FRITZ!Box so that it is as unobstructed as possible, i.e. not directly in back of or under an obstacle such as pieces of furniture or a heater.
  4. Place the FRITZ!Box as high in the room as possible, for example on a shelf.
  5. Place the FRITZ!Box so that there are as few obstacles as possible between it and the wireless devices. Even small objects in the immediate vicinity of your FRITZ!Box can greatly reduce the coverage area of the wireless signal. Metallic objects or objects containing water, for example radiators, refrigerators, or even houseplants, significantly reduce the quality of the wireless signal.
  6. Place the FRITZ!Box away from other radio transmitters, for example microwaves, wireless speakers, or Bluetooth devices.

Finding the ideal location for the Mesh Repeater

The following steps are only necessary if you are using a FRITZ!Repeater, a FRITZ!Powerline adapter with wireless support, or an additional FRITZ!Box to extend the Wi-Fi of your FRITZ!Box:

  1. Position the Mesh Repeater where the quality of the FRITZ!Box's wireless signal is good. You can find tips on positioning it in the guide Finding the ideal location for the Mesh Repeater.

Now the FRITZ!Box and the wireless devices are ideally configured. If the Wi-Fi connections of individual wireless devices still drop, the problem lies with the respective wireless devices. The manufacturer of the wireless devices may be able to give you some troubleshooting tips.

However, if Wi-Fi connections continue to drop after a certain distance, the Wi-Fi environment or the range of the wireless devices is the cause. In this case you can use a FRITZ!Repeater to increase the range and stability of the Wi-Fi network.

Similar errors: