Anybody here here did research on best available phones for privacy?

Privacy oriented phones seems to be the least developed area in the privacy-oriented tech world. Am I wrong?

I understand that how private a phone is depends on several factors (not just the HW, OS and installed apps but also using a sim card, cell towers.. ) and the more things you want to use your phone for, the more impossible true phone-related privacy becomes but is anybody even *really* trying?