The problem is that (as far as i know) only pixels fulfill their security requirements, for example that the bootloader is not only unlockable but also lockable. But I also would like to have more devices supporting it
CalyxOS relocks the bootloader and they supported the FP5 right after launch.
CalyxOS is not a hardened OS, and GrapheneOS requires more than than just relocking the bootloader.
Fairphone’s devices do not meet basic security requirements for hardware, firmware and the software device support including drivers. Please look at the hardware requirements at https://grapheneos.org/faq#future-devices and check for yourself how many of those are provided by the Fairphone. Even the Fairphone 5 has a CPU core from 2021 without even PAC and BTI.
[please… something other than Pixel…]
Pixel 9
The problem is that (as far as i know) only pixels fulfill their security requirements, for example that the bootloader is not only unlockable but also lockable. But I also would like to have more devices supporting it
Fairphones should be supported imo. CalyxOS relocks the bootloader and they supported the FP5 right after launch.
CalyxOS is not a hardened OS, and GrapheneOS requires more than than just relocking the bootloader.
Ref: https://discuss.grapheneos.org/d/7208-8y-security-updates-on-fairphone-5-will-the-devs-consider-porting-grapheneos