FRITZ!Box 6820 LTE Serwis - Baza wiedzy

FRITZ!Box 6820 LTE Serwis
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Slow Internet access via mobile network

The Internet connection on computers, smartphones, and other devices connected to the FRITZ!Box is very slow. As a result, web pages load slowly, it takes a long time to download files, and video streams are either not displayed correctly or stop playing, for example.

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 issue persists.

1 Checking the throughput of the mobile connection

Check whether the FRITZ!Box displays the throughput (speed) for the mobile connection that was guaranteed by your mobile network operator:

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "LTE Information" in the "Internet" menu.
  3. The actual speed of the mobile connection is displayed on the "Mobile Communications" tab in the "Throughput" line. Compare the throughput with the speed guaranteed by your provider.
    • If the throughput displayed is almost as high as the speed guaranteed by your mobile network operator, then there is no problem.

      Note:At many locations you will not be able to fully achieve the guaranteed throughput. Therefore, LTE providers say that they offer speeds of "up to" a certain value.

    • If the throughput displayed is significantly lower, resolve the issue:

2 Checking the throughput between the wireless device and the FRITZ!Box

Perform the following step if the device is connected to the FRITZ!Box over wireless LAN, but it also is equipped with a network port:

  1. Clear the wireless connection between the device and the FRITZ!Box.
  2. Use a network cable (for example the yellow cable included with delivery) to connect the device to the FRITZ!Box.
  3. Check whether you notice any difference in speed when you connect to the Internet over LAN instead of over wireless LAN.

3 Correcting the Windows network settings

In order for a computer to access the Internet, all Internet requests from the computer must be forwarded to the FRITZ!Box. If the computer automatically obtains its IP settings from the FRITZ!Box via DHCP, then it also automatically obtains a default gateway (IP address of the FRITZ!Box).

Multiple default gateways are not allowed and cause errors. Therefore, make sure that only one single standard gateway is configured:

Note:Note for network experts: Default gateways required to route to another IP network can be replaced with a static route. Refer to the Windows help for information on how to set up static routes.

  1. Press the keyboard shortcut "Windows key" + "R".
  2. Enter cmd in the "Open" field and click "OK".
  3. Enter route print in the command prompt window and press Enter.
  4. Check how many entries in the table start with 0.0.0.0.
  5. If there is more than one standard gateway (several entries begin with 0.0.0.0):

    Windows 10 / 8:

    1. Press the keyboard shortcut "Windows key" + "X" and select "Control Panel" from the context menu.
    2. Click "Network and Internet" in the "Control Panel" menu.
    3. Click "Network and Sharing Center" and then "Change adapter settings".
    4. Click on the arrow next to the "Change view" icon in the menu bar and select "Details".
    5. Right-click the LAN connection for a network adapter that is not connected to the FRITZ!Box. The name of the network adapters is listed under "Device Name".
    6. Click "Properties".
    7. Select "Internet Protocol Version 4 (TCP/IPv4)".
    8. Click "Properties".
    9. If there is a default gateway entry, remove it.
    10. Click "OK" to save the settings.

    Windows 7:

    1. In Windows, click "Start" and then "Control Panel".
    2. Select "Category" from the drop-down list "View by:" (top right) in the "Control Panel" menu.
    3. Click "Network and Internet" and then "Network and Sharing Center".
    4. Click "Change adapter settings".
    5. Click on the arrow next to the "Change view" icon in the menu bar and select "Details".
    6. Right-click the LAN connection for a network adapter that is not connected to the FRITZ!Box. The name of the network adapters is listed under "Device Name".
    7. Click "Properties".
    8. Select "Internet Protocol Version 4 (TCP/IPv4)".
    9. Click "Properties".
    10. If there is a default gateway entry, remove it.
    11. Click "OK" to save the settings.
  6. Repeat these steps for all LAN connections of network adapters that are not connected to the FRITZ!Box.

4 Configuring security software

Using security software such as firewalls, antivirus software or web filters to monitor Internet access can reduce the Internet speed on your computer:

  • Configure all security software installed so that it does not limit the speed of your Internet connection.

Now the FRITZ!Box and the devices connected to it establish the fastest Internet connection possible. If Internet access continues to be slow, the mobile connection may be throttled if you have exceeded the data usage threshold, or your mobile network operator may be experiencing technical difficulties. In addition, all of the mobile device users in a cell share the available bandwidth. The greater the number of users with active connections in a given cell, the less bandwidth is available to each individual user.