The Native iOS Keyboard
If you want to send truly secure messages from your iPhone, there’s one built-in service that you should be using: the native iOS keyboard. Even if you’re using the apps mentioned in this article, all that effort goes to waste if you type your messages into a third-party keyboard app like Gboard or Swype.
That’s because most keyboards require “Full Access” to work properly. And, unfortunately, that full access pretty much allows them to collect and store anything you type using their keyboard app. While they may have cool features, it’s just not worth it if you want to keep your messages private and secure.