If you have a 3G/4G/LTE device connected to one of your access points, the DEVICE | Access Points > 3G/4G/LTE WWAN page offers monitoring information on that device.
The first panel provides connectivity data and modem status, and the second panel shows a graphical representation of the device’s signal strength.
Click Refresh to refresh the data in panels.
If no 3G/4G/LTE device is detected on one of your access points, you get the following message on the DEVICE | Access Points > 3G/4G/LTE WWAN page: