How to achieve the best WiFi performance

Optimizing the wireless network

At home, the wireless network (WiFi) usually represents the most common method for accessing the Internet. Smartphone and tablet users are especially dependent upon solid wireless reception. Since they change location often, ideally the wireless network should cover all rooms. The FRITZ!Box is already ideally configured for most wireless environments in the factory settings. If the wireless speed or network coverage is inadequate, the following simple steps will help you to optimize the wireless network.

1 Finding the ideal location for wireless devices

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

2 Installing the latest software

Installing the latest FRITZ!OS for the FRITZ!Box

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:You can find information on updating the wireless network adapter or wireless device in its manual, or consult the manufacturer directly.
    You can find the latest drivers for the FRITZ!WLAN Sticks in our download area.

3 Identifying sources of interference

  1. Turn off all devices that could interfere with the wireless network, one after the other.

    Note:All devices that emit radio waves are possible sources of interference. These include other wireless devices, wireless speakers, Bluetooth devices, baby monitors or microwaves, for example.

  2. Check whether the wireless connection is still impaired.
    • If the wireless connection is no longer impaired:
      1. Turn the devices back on, one after the other.
      2. After you have turned on each individual device, check whether the wireless connection is still impaired.
        • If you identify a device or devices causing interference, you have the following options:
          • Leave the device turned off,
            • or:
          • Enable or refresh the auto channel (see the section "Enabling or refreshing the auto channel"),
            • or:
          • Switch to a different frequency band (see the section "Establishing a wireless connection to the 5 GHz frequency band").

4 Enabling or refreshing the auto channel

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

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

  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.
  5. Click the "Refresh Auto Channel" button.

5 Setting the maximum transmitter power

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Check which wireless channel setting is enabled.
    • If the option "Set radio channel settings automatically (recommended)" is enabled:
      • Proceed with the following section.
    • If the option "Adjust radio channel settings" is enabled:
      1. Click "Additional settings" (if available).
      2. Select "100%" from the drop-down list "Maximum transmitter power".
      3. Click "Apply" to save the settings.

6 Enabling WPA2 encryption

Current wireless standards require secure WPA encryption. If you enable the encryption method "WPA + WPA2" in the FRITZ!Box, all wireless devices automatically use the safest WPA mode for wireless connections:

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Security" in the "Wireless" ("WLAN") menu.
  3. Enable WPA encryption.
  4. Select "WPA + WPA2" for the "WPA mode".
  5. Enter a network key in the "Network key" field.

    Important:To ensure optimal security, the password should be at least 20 characters long and contain capital and lower-case letters (but not letters such as ä, ë, ö, ü, é, í), digits, and other characters.

  6. Click "Apply" to save the settings.

7 Changing the name of the wireless network (SSID)

If there are other wireless networks with the same name in the vicinity, wireless devices may automatically attempt to connect to the wrong wireless network. To avoid this, give your FRITZ!Box a unique name:

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Network" in the "Wireless" ("WLAN") menu.
  3. In the field "Name of the wireless radio network (SSID)", enter a unique name for the 2.4 GHz and the 5 GHz frequency band (if applicable) that does not contain special characters. Since not all wireless devices support all special characters, we recommend using only standard Latin letters (not letters such as ä, ë, ö, ü, á, é, í) and numbers.
  4. Click "Apply" to save the settings.

When you apply the new wireless network name, all wireless connections to the FRITZ!Box are cleared. You must then reconfigure wireless connections to the FRITZ!Box.

8 Establishing a wireless connection to the 5 GHz frequency band

The 5 GHz frequency band is subject to interference less frequently. Therefore, switch to this frequency band if your FRITZ!Box and your wireless devices support 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.
  4. Enter a different name in the field "Name of the wireless radio network (SSID)" so that you can distinguish the 5 GHz wireless network from the 2.4 GHz wireless network in the future.

    Important:Not all wireless devices support all special characters. Therefore, only use standard Latin letters (not letters such as ä, ë, ö, ü, á, é, í) and numbers in the wireless network name.

  5. Click "Apply" to save the settings.
  6. Establish a wireless connection to the FRITZ!Box wireless network with the name (SSID) that you assigned to the 5 GHz frequency band.