The answer is False.
According to research, most of what many human beings do on a daily basis is to communicate on nonverbal cues and behaviors. They include facial expressions, postures, eye gaze, tone, and voice. From the little things we do everyday like handshakes to our hairstyles, nonverbal cues reveal who we are and how we relate with others. They communicate something without the use of written or oral language.
Text messaging is not part of any nonverbal communications. In fact, most people will argue that text messaging is hugely affecting nonverbal communications. For example, if I text you and lie to you, you will not be able to read my body position. You may believe what I am saying is true, but you cannot read it.