An anonymous reader writes "I'm in charge of getting some phones for my company to give to our mobile reps. Security is a major consideration for us, so I'm looking for the most secure off-the-shelf solution for this. I'd like to encrypt all data on the phone and use encryption for texting and phone calls. There are a number of apps in the android market that claim to do this, but how can I trust them? For example, I tested one, but it requires a lot of permissions such as internet access; how do I know it is not actually some kind of backdoor? I know that Boeing is producing a secure phone, which is no doubt good — but probably too expensive for us. I was thinking of maybe installing Cyanogenmod onto something, using a permissions management app to try and lock down some backdoors and searching out a trustworthy text and phone encryption app. Any good ideas out there?"