While it may not work flawless on day one, there's a type of phone that only gets better with age, Linux mobile. Best bet would be to support relevant projects: @dawndrums DivineD, @mechasystems Comet, @postmarketOS, @phosh UI, @purism Librem5v2, #Librephone project by @fsf, etc.
#gnuLinux #LinuxMobile #MobileLinux #DivineD #Librem5Fir #Librem5v2 #Librem5 #LibertyPhone #Pinephone #MechaComet #FreeSoftware #OpenHardware