As there is more and more the question of privacy focused smartphones, and here my hopes lie on the Librem 5 Purism (https://puri.sm/shop/librem-5/)
I would like to post here a few videos for interested people who may want to get a closer look.
Here you find a short article (with video) describing the cooperation with Matrix (Riot.io) concerning the encrypted communication:
https://matrix.org/blog/2017/08/24/the-librem-5-from-purism-a-matrix-native-smartphone/
The will be three options to choose a user interface (Gnome, KDE mobile and UBPorts).
UBPorts is my favourite as it is already usable:
And some recent information from the UBPorts team:
And finally an interview with Todd Weaver, CEO of Purism SPC, about the upcoming Librem 5 smartphone and the UBports - Purism partnership