Automatic Call Teller tells the Incoming caller name if the caller is already in contact database of the device other wise it will announce only incoming number of the caller. so that you can identify who is calling without looking into your phone. Caller Name Talker uses the built-in Android text-to-speech engine to voice the caller. When you run this application first time, then it check’s whether text-to-speech engine is installed or not, if not then it redirect,s you on Google play for TTS engine, you have to install only once.