Came accross this by accident, not sure what to make out of it.

https://www.granitephone.com/

Key words:

• Extremely private and secure environment
• High levels of encryption
• Secure operating system
• No backdoors

A lot of buzz online with little real info. All articles just link back to their website.
I remain to be convinced. We've seen many similar claims before.
The one thing I like is how their web site follows the mouse cursor

EDIT:
Sorry about the noise. Just found a bit more info: "GranitePhone’s selling point is the GraniteOS, a version of Android customised by Sikur." Not sure I could put "secure" and "Android" in the same sentence in a meaningful way.