FRITZ!Box 6890 LTE Service - Knowledge Base

FRITZ!Box 6890 LTE Service
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Slow wireless connection according to 802.11ac

The data rate of a wireless connection (WiFi) according to the wireless standard 802.11ac is lower than the data rate possible with the wireless standard.

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

1 Establishing a wireless connection to the 5 GHz frequency band

The maximum data rate can only be reached when the wireless connection is established to the 5 GHz frequency band and the FRITZ!Box uses the wireless standard 802.11ac:

Enabling the 5 GHz frequency band

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Network" in the "Wireless" ("WLAN") menu.
  3. Enable the option "Wireless radio network enabled" in the "5-GHz Frequency Band" section. If the section is not displayed, enable the Advanced View first.
  4. Click "Apply" to save the settings.

Configuring the wireless standard "802.11n+ac"

In the factory setting, the wireless standard 802.11ac is configured for the 5 GHz frequency band in the FRITZ!Box. If you changed the FRITZ!Box's wireless settings, configure the following settings:

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Enable the option "Adjust radio channel settings".
  4. Click "Additional settings".
  5. Select the wireless standard "802.11n+ac" from the drop-down list "Radio channel in 5-GHz Frequency".
  6. Click "Apply" to save the settings.

2 Installing the latest software for the wireless device

  • Install the latest driver for your computer's wireless network adapter or the latest operating system, for example Android, iOS, for the wireless device.

    Note:Refer to the manufacturer for information on updating the device, for example consult the manual.
    You can find the latest drivers for the FRITZ!WLAN Sticks in our download area.

3 Enabling or refreshing the auto channel

When the auto channel is enabled, the FRITZ!Box checks the wireless environment and automatically selects the most suitable wireless channel settings. The allocation of the frequency bands can change significantly over the course of the day, though. The FRITZ!Box does not refresh the auto channel as long as wireless devices are still connected with it. However, you can manually update the auto channel at any time:

  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.

    Note:All wireless connections to the FRITZ!Box are cleared and then automatically re-established when you enable or refresh the auto channel.

  5. Click the "Refresh Auto Channel" button.

4 Finding the ideal location for the FRITZ!Box

  1. If possible, position the FRITZ!Box in a room that is centrally located.
  2. Do not position the FRITZ!Box directly in the corner of a room.
  3. Position 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. Position the FRITZ!Box as high in the room as possible, for example on a shelf.
  5. Position the FRITZ!Box so that there are as few obstacles as possible between it and other wireless devices. In particular, metallic objects or objects containing water, for example radiators, refrigerators, or even houseplants, significantly reduce the quality of the wireless signal.
  6. Position the FRITZ!Box so that it is away from other transmitters, for example microwaves, wireless speakers, or Bluetooth devices.

Now the FRITZ!Box and wireless device are ideally configured. You will now achieve the greatest possible wireless range as well as the highest throughput between your wireless device and the FRITZ!Box.

Note:If the measures given in this guide do not sufficiently increase the quality of your wireless connection, you can use a FRITZ!WLAN Repeater that supports the wireless standard 802.11ac to extend the range of the wireless network and increase the throughput of your wireless connection.