Hopefully this won't turn into a political debate, if it does I will report the thread to a mod and have it moved to the Politics forum.
There is an open source free app for Android and iPhone's that does text messaging and phone calls. It travels across the interwebs fully encrypted so that the FBI/NSA can't read them or listen in. It is well funded by grants and donations and is run by some very reliable folks.
To be 100 percent secure both parties of the conversation need to have the app. If only you have it all of your 'sends' are private and encrypted. Plus there is a handy button to hit to try and get the recipient to switch. Also it isn't a pile of crap, it is a good messaging app.
https://whispersystems.org/