Actually, there are much more striking similarities!
Kyocera did a dualscreen phone in 2013 and ultimately failed in making apps landscape compatible on their own

I know one or two folding- and a qwertyphone company hitting the same problem 6 years later...

And since Kyocera has 6 major branches: solar, document, display, components, cutting tools and Kitchenware (which i happen to be a contractor of) they have major parts of their phones built inhouse.

The other way around, a manager told me every smartphone on the market contains ceramic components only kyocera supplies. So you can be sure Kyocera parts are contained in the F(x) Pro1