Well, I pity the fools that assume that their communications are private when they are using SMS, FB Messenger, or Hangouts. If you want your info to stay private, do not send it to untrustworthy parties via untrustworthy means.

Even if you stick with apps like Telegram or Wire (my choice), you have to have in mind that your phone might have a keylogger on (looking at Xiomi and Huawei).