FRITZ!Box 6840 LTE Service - Knowledge Base

FRITZ!Box 6840 LTE Service

Cannot access the Internet

Although the FRITZ!Box was configured to access the Internet using the LTE network, network devices (for example computers, smartphones) connected to the FRITZ!Box cannot use the Internet connection.One of the following error messages may be displayed in the event log of the FRITZ!Box:

  • "No LTE network was found within range."
  • "Could not establish LTE connection. Reason: ESM_FAILURE. Please check the APN settings."

Important:Some of the settings described here are only displayed if the advanced view is enabled in the user interface. The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS

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

1 Checking whether the "Power" LED flashes

2 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. Click on the "Internet Connection" tab.
  4. Check whether error messages are displayed.
    • If the message "LTE no longer responding" is displayed frequently (several times a day):
    • If the message "Could not establish the LTE connection. Reason: ESM_FAILURE. Please check the APN settings." is displayed:
      1. Click "Account Information" in the "Internet" menu.
      2. Select "Other Internet service provider" from the drop-down list.
      3. Enable the option "Use standard access point name (APN)".
      4. Click "Apply" to save your settings.

        Important:If the error message continues to be displayed, enable the option "Specify access point name (APN)" and enter the access point name for your LTE provider manually. Your LTE provider can provide you with information on the access point name.

3 Enabling the FRITZ!Box's DHCP server

The FRITZ!Box is configured as a DHCP server in the factory settings. If you disabled the FRITZ!Box's DHCP server, configure the following settings:

  1. Click "Home Network" in the FRITZ!Box user interface.
  2. Click "Home Network Overview" in the "Home Network" menu.
  3. Click on the "Network Settings" tab.
  4. Click the "IPv4 Addresses" button.
  5. Enable the DHCP server and define the range from which the FRITZ!Box assigns IP addresses.

    Note:The FRITZ!Box uses the IP address 192.168.178.1 (subnet mask 255.255.255.0) and assigns IP addresses from xxx.20 to xxx.200 in the factory settings.

  6. Click "OK" to save the settings.

4 Configuring a network device as a DHCP client

5 Configuring the Internet Explorer

The following step is only necessary if you are using Microsoft Internet Explorer and it displays the error message "Web page unavailable while offline":

  1. Start the Internet Explorer.
  2. Open the "Tools" menu.
  3. If the menu "Work Offline" entry is displayed and there is a checkmark in front of it, click this entry to remove the checkmark.
  4. Click the "Internet Options" menu entry and then "Connections".
  5. Enable the option "Never dial a connection".
  6. Click "OK" to save the settings.