This is one of the best voice typing apps on Android phone. Gboard is the official google keyboard, and when go to word documents or whatsapp, you can press this button (the microphone), and you can activate voice typing to type out everything you want to say. "smiley emoji" And when you say something wrong, you can say "Delete last word". When you say "clear", you can remove your last sentence. When you say clear all, you can remove everything. When you say "send", you can send out your message