William Morder via trinity-users wrote:

> Please don't take this as an endorsement, since I have not actually
> installed it yet myself. I am still researching how to root my phone
> properly.
> 
> https://replicant.us/
> 
> I don't know what models of smartphone are supported. I was hoping to find
> a cheap used phone for purposes of experimentation, before I mess up a
> working system. I hear that some newer phones are supposed to have a
> GNU/Linux OS already installed, but have waited a couple years for the big
> announcement, and still nothing.

The problems are the small market share and the proprietary hardware. There
were so many that failed on the way ... and I am amazed how people think
they can deliver something better and working. I think it is sad that
people do not unite behind one single solution and make it working as
competitor to the big. Instead the Linux/open source community keeps
splitting into smaller and smaller parts, which makes them weaker and
weaker - the software development gets slower and slower etc.

I personally am lucky to have TDE and Sailfish OS.

Regarding opening the boot loader - this is what the AOSP from Sony is. You
enter the IMEI and get a code with which you can open the bootloader.

You can always buy used one and play around ;-)

regards