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•
Turn off and on both the modem and the device that is connected to the modem.
•
If your modem's IP address was changed and you do not know the current IP address, clear the modem's
configuration to factory defaults.This sets the modem's IP address to 192.168.5.1. For more information,
see
Return the Modem to Its Factory Default Settings
Troubleshoot the Mobile Broadband Internet Connection
If your modem cannot access the Internet, check the mobile broadband connection:
•
Make sure that a micro SIM card is installed in the modem. Micro SIM cards from other devices do not
function in the modem and this SIM card does not function in other devices. For information about
inserting the SIM cards, see
•
If SIM security is enabled, make sure that you entered the PIN correctly to unlock the SIM card (see
Enter the SIM PIN to Enable the Modem to Connect to the Internet
prevents the modem from connecting to the mobile broadband network.
•
Make sure that your mobile broadband account is active.
•
Check with your Internet service provider to ensure that coverage exists in the area. If no mobile
broadband coverage exists, all Signal Strength bars are off.
•
If only one or two Signal Quality LED bars light, move the modem closer to a window for better access
to the mobile broadband signal.
•
Check to see if your mobile service provider is experiencing network problems. It might not be that the
modem cannot connect to the Internet, but rather that your service provider cannot provide an Internet
connection.
•
You might need to add a custom APN profile (see
Connections
on page 31). Contact your mobile broadband service provider.
For more information about Internet connection problems, see
88.
Obtain an Internet IP Address From Your Service Provider
If your modem cannot access the Internet but one or more Signal Strength LED bars light green, see if the
modem can obtain an Internet IP address from the mobile broadband service provider.
Unless the modem was assigned a static IP address, the modem requests an IP address from the mobile
broadband service provider. You can determine whether the request was successful (see
Details and Other Details About Your Modem
If the IP address is shown as 0.0.0.0, the modem did not obtain an IP address from the mobile broadband
service provider. If this situation occurs, do the following:
•
Make sure that an APN profile exists for your mobile broadband service provider (see
Profiles for Mobile Broadband Connections
•
Turn off the modem and then turn it back on.
If you still cannot obtain an Internet IP address, contact your mobile broadband service provider.
LTE Modem LB1120 and LB1121
Install the Micro SIM Card
Manage APN Profiles for Mobile Broadband
on page 65).
on page 31).
Alerts and Troubleshooting
87
on page 59.
on page 8.
on page 50). A locked SIM card
TCP/IP Network Not Responding
on page
View Account
Manage APN
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