What it is

Open Mobile API ("interface") to access UICC secure elements

UICC stands for Universal Integrated Circuit Card.

It is a the physical and logical platform for the USIM and may contain additional USIMs and other applications.

(U)SIM is an application on the UICC.

https://bluesecblog.wordpress.com/2016/11/18/uicc-sim-usim/

Good read: https://arxiv.org/ftp/arxiv/papers/1601/1601.03027.pdf

Note2: The term SIM is widely used in the industry and especially with consumers to mean both SIMs and UICCs.

https://www.justaskgemalto.com/us/what-uicc-and-how-it-different-sim-card/

Commands

adb shell pm uninstall --user 0 org.simalliance.openmobileapi.uicc1terminal

To put it back:

adb shell cmd package install-existing org.simalliance.openmobileapi.uicc1terminal

Every removal listed here is per-user only: the system image is untouched, and the restore command puts the app back from the copy already on the device. Nothing is downloaded.

This is not the directory. Here we say what a package is in general; what happens on your particular television is on your model's entry, and that one wins. The same package can be dead weight on one set and hold the home screen up on another.