It's done
https://fosstodon.org/@jolek78/102683141712175816
I flashed the original android stock image, and then to ubuntu touch. Apparently there was a problem with radio.img. Regarding the gps, I hope the solution will appear soon. The system is pretty amazing...

Fabio

Hello Everyone
I just installed the ubtouch on my Nexus5.

I am facing two main issues:
The first: my phone is not able to detect any sim. I am under Giffgaff, and I had no similar problem before. The second: the gps seems laggy, slow and inaccurate.

I tried with the rc, the stable and the devel channel.

Any clues?