Call Name Announcer is usable in a situation like if you are driving and working some important task and the phone is in your pocket or near by you one sends you an Sms while your smart phone is in near by you
Caller Name Announcer simply speaks it out.
Caller Name Announcer speaks every thing while some one is calling you or messenger name you will identify it with out looking to your smart phone name as well as content of message. if calling number is saved in you mobile it will announce its name otherwise it will announce unknown name.
Caller Name if exist in contacts
If does not exist in contacts, call that unknown
Speaks incoming Sms contents and sender name