https://www.blackphone.ch
You can't build a secure platform on top of Android, or iOS:
I’m highly skeptical about this device security level. Android is Linux, plus a growing layer of closed source drivers and apps that can do anything they’re instructed to do, including of course reading all your data. Don’t even think that rooting an Android device and removing all Google apps will give you any security: if a driver can read what you type/say/store/photograph (yes they can) you’re screwed. Let’s go to the point. If I wanted to spy on people, I would put eavesdropping and phoning home routines in the last place anyone could look for them: closed source device drivers! They run at highest privilege and can’t be replaced, uninstalled, examined or controlled in any way by the user. As for Google practices, they’re becoming more clear every day; here’s a good read: http://bit.ly/IIXc5t By the way, Apple and Windows competing products raise the same concerns and thus offer the same level of security: zero.