How can I disable the Sim-Card?

Researcher

I did read once, that it is possible to deactivate the Sim-Card, that the emergency calls get disabled. How can I do that and is it recommended to do that? (I don't have a Sim-Card in my Phone and I will not use Emergency Calls)

I only found these in the Apps:
CarrierConfig2
Sim-App-Dialogbox

de0u

Researcher The Pixel Tablet does not contain a cellular modem.

Oggyo

Activate the airplane mode.

Connecting to your carrier's network inherently depends on you identifying yourself to it and anyone able to obtain administrative access. Activating airplane mode will fully disable the cellular radio transmit and receive capabilities, which will prevent your phone from being reached from the cellular network and stop your carrier (and anyone impersonating them to you) from tracking the device via the cellular radio. The baseband implements other functionality such as Wi-Fi and GPS functionality, but each of these components is separately sandboxed on the baseband and independent of each other. Enabling airplane mode disables the cellular radio, but Wi-Fi can be re-enabled and used without activating the cellular radio again. This allows using the device as a Wi-Fi only device.

Source - https://grapheneos.org/faq

Researcher

Oggyo I have, but I think remember reading, that there is a way to disable the Sim-Card fully? Because even tho I don't have a Sim-Card, I could make emergency calls, so it is not complete shutdown?

Upstate1618

Researcher
You can't make emergency calls with airplane mode on. Airplane mode completely shuts down cellular modem.

Oggyo

If you have SIM card(s) you can turn them on/off from Settings >> Network and Internet >> SIMs.
Not having or disabling the SIM card(s) doesn't prevent your phone from connecting to the towers and so making emergency calls.
If I understand you correctly, your best bet is Airplane mode.