On the right-hand side at the top of the page, select "Billing" and you will be taken to a detailed page of your month's bill.
To see SIM card allocations: Select "click here" on the bottom left corner.
You wil be taken to "Device Admin" and on the top left select "manage sim cards".
You will see "Assigned SIMS" as well as "Previous SIMs".
Follow the Link Below to the YouTube Video:
*Costs are subject to revision.