Because the bootloader could not be unlocked on Zenfone 9, I decided to write to Asus Support to be told when it would be possible to unlock the bootloader on Z9 and Z10. The response I received was that it would no longer be possible to unlock the boot on any of these phones. Upon receiving this news I decided not to buy the Z10. I think it is a big mistake that Asus has decided that the boot cannot be unlocked. I don't know if they will change their mind, but there will be many of us who decide NOT to buy it.