I hate having to go back to the dashboard to view the cellular sim card details to recall which one is the active sim or the sim if number.
The cellular wan page should have a link to show the sim card popup.
The only way I got these to both display at the same time was to click on the cellular ip first before.
The ip details should also be accessible from wired wans, and wifi-as-wan or other wan types as well.
When your in the config portion of the wan , you may want to also view the status without having to close out of the config wan window.