I have an old Xiaomi mi 9 Lite (pyxis) with a custom android rom installed.
The CPU is the Qualcomm Snapdragon 710 (all specs)
I've already discovered Ubuntu Touch, but it comes with a desktop environment and my Phone is not suported.
I also looked at Ubuntu Server for ARM but can't find a way to use that.
Arch Linux ARM isn't supported by the processor.
Maybe interesting for more research would be Renegade Project which was able to get Windows 11 running on a Smartphone with UEFI.
Do you have any idea how to use my old phone as a homeserver? I'm happy to learn anything that goes in the right direction, even if it's just a small step towards a solution.
I have a lot of time for the project, but I'm a beginner, so if I have to create a own ROM I'd like you to help me with good learning sources.