Text messaging or texting, is the act of comprising and transfer passing, electronic messages between two or more mobile phones, or fixed or portable devices over a phone network. The term initially referred to messages sent using the Short Message Service (SMS). It has grown to include messages comprising image, video, and sound content (known as MMS messages). The sender of a text message is known as a texter, while the service itself has different colloquialisms depending on the region. So I have an android apps which is Private Text Messaging Calls. This apps is very useful for texting.