You can use voice input to type text by speaking. This feature uses Google's speech-recognition service, so you must have a data connection on a mobile or Wi-Fi network to use it.
Text that you enter by speaking is underlined. You can continue entering text to keep it, or delete it. You can speak to enter text in most places that you can enter text with the onscreen keyboard.
Say "comma", "period", "question mark", "exclamation mark" or "exclamation point" to enter punctuation.
When you pause, what you spoke is transcribed by the speech-recognition service and entered in the text field, underlined. You can touch the Delete key to erase the underlined text. If you start typing or entering more text by speaking, the underline disappears.