The only secure phone that can do all of this:

1. Provides secure voice and sms
2. Features permission enforcement for installed apps
3. Firewall detects attacks on the baseband
4. Alerts users to gsm interceptors.
5. Does not use any form of VOIP
6. Offers full source code for review.

Our nation’s secrets are in jeopardy, the same secrets that make your company profitable. The FBI estimates billions of U.S. dollars are lost to foreign competitors every year. These foreign competitors deliberately target economic intelligence in advanced technologies and flourishing U.S. industries.