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So debian was turned into ubuntu, debian is all free, debian has flex when it comes to interface & ubuntu Is firm.

It seems a lot of programs in software centers in Ubuntu are also in other Linux operating systems including Debian. Maybe I'm a little confused. The normal Ubuntu distribution was using Unity. And that is when I went to Ubuntu Mate to get the classic user interface (UI). Now, I am looking to replace my Android operating system on my Sony phone with something maybe Ubuntu or something. Have never replaced an operating system on a phone before. But am looking forward to this new challenge.