A good way to check out mobile Linux is through postmarketOS. They have a list of older android phones that the OS can be flashed on to and have a near mainline Linux kernel. I would just give the caveat that since it does not run android then you cannot use android apps unless you use something like Waydroid to emulate.
A good way to check out mobile Linux is through postmarketOS. They have a list of older android phones that the OS can be flashed on to and have a near mainline Linux kernel. I would just give the caveat that since it does not run android then you cannot use android apps unless you use something like Waydroid to emulate.