How can I see the data usage on my device?

First, enable the data usage profile configuration.

In device Web GUI, navigate to Service -> Cellular Toolkit -> Data Limit -> Add a data limit profile.

In the pop-up window, type in the Carrier Name, select the Cycle Period and Start Date, type in the Data Limitation, check Enable, then click Save.

Then navigate to Status -> Usage -> Cellular Usage. You can select SIM A or B, hourly or daily usage records.

Cellular Usage shows the records per your setting, but this is not for billing purpose.