It works really well for low level Linux stuff (terminal, command line utils, diagnostic tools) but the thing that kept me from using it as my main phone in the end is the browser, which is very outdated now. Basically the proprietary bits (HW drivers) have prevented an otherwise very free mobile OS from being updated, so the kernel is quite old and so is glibc. Can't update them without breaking the proprietary bits! Add in the poor specs (by today's standards) and it doesn't really cut it for your average Linux user's use case (some things like YouTube work most of the time but they are very slow). In conclusion, yes I would buy one (I bought mine in 2015 I think) and it's useful and fun, but don't expect it to replace your "normal" smartphone!