Finman is not the inventor. That's like al gore....... Variants of this phone OS has been in the works for 10+ years. There are limitations that are not disclosed in the advertising.Do your research via a few web searches and you will be satisfied this is a nothing burger.

There are however companies out there that take this seriously and have completely custom encrypted phones for a few thousand dollars that you could trust. These are used by corp execs and private security teams. Just recently one of them was charged for aiding in drug trafficing simply for having supplied the encrypted phone and network connection. So you know it works.

Oddly enough though the FBI seemed to have still intercepted messaging data. Go figure.