Maybe a phone based on privacy?
Several privacy focused/open-source cell phone alternates out there already:
https://en.wikipedia.org/wiki/List_of_open-source_mobile_phones
https://vpnoverview.com/privacy/devices/the-best-secure-smartphones-for-privacy/
https://www.pine64.org/pinephonepro/
https://shop.puri.sm/shop/librem-5/