i remember back in 2014 trying to find a decently priced and widely available smartphone that could be repurposed into a secure hardware wallet. replacing the o

i remember back in 2014 trying to find a decently priced and widely available smartphone that could be repurposed into a secure hardware wallet. replacing the operating system was possible for a lot of phones, but after a lot of research i could never find a phone that didn't either require binary blob drivers or was fully open in terms of firmware both on the application processor side and the baseband side. (even if that meant disabling the baseband, which was desirable anyway) i wonder if that's still true today. although i suppose there are a lot of hardware wallet choices now.