The part about getting authorized to test the emergency calling capabilities is cool! I should've expected that would be a thing but I didn't ever consider it.
Great job.
My advice would be to not take the frustrating and useless road of a non-profit structure for some things that you do for pleasure.
The for-profit will be simpler and give you more liberties, and if, in the end, you have the good mindset that you want your creations to be shared freely, you can do it anyway. It is a state of mind.
Uhhhhh congratulations for what would be pre-Android 1.0?
Frankly, this is similar to Pinephone Pro, which the last time I checked, couldn't even do the "phone" part of "PinePhone pro". And tons of hardware was non-functional since all they did was piece shit together and not support software in any way.
Maybe I shouldnt be as negative, but fuck, we need a competitive Linux phone comparable to Android and IPhone, and EVERY Linux phone project is, well, braindead stupid and 15 years prior to anything current. And folks making patches are ignored for weeks or months, if ever included at all.
I bought a OnePlus 6 for 50 euros from eBay and I can do a ton of things with it already. Plasma is great in mobile, and what did not work I got working pretty fast together with Kimi and DeepSeek.
For example here's patches to get NFC YubiKey working in Secrets app:
https://github.com/pimeys/oneplus6-yubikey-nfc
It is a work in progress but pretty easy to pick things up and fix in this age of agents...