Voiding warranty is a lesser concern than loss of privacy.
It would be great to have that technical documentation to help with the modification:
Allow me to counter your other points. I’m not an expert in this area, but I think there are plenty of devices that get imported without being required to have emergency calling feature. There are also plenty of devices that connect to cellular networks that don’t have the emergency calling feature, such as tablets. It seems to me that this stuff is not required to be imported or allowed on networks. I actually don’t need a tablet, I need something exactly like a phone (small size, usable for making calls), minus the cellular modem. At least, not one that cannot be turned off temporarily.
I appreciate your consideration of my input. Thank you for your responses.