Cortana is your personal assistant on your Android Phone. She's there to help make things easier for you and keep you up to date on the things that matter to you.
Her job is to be your personal assistant. She makes it easier to get things done on your phone, and she's designed to be simple to use.
Cortana features a "do-not-disturb" mode in which users can specify "quiet hours", something that is already available for Windows Phone 8.1 users. Users can change the settings so that Cortana calls users by their names (or nicknames). It also has an extensive library of Easter Eggs, consisting of witty and pre-determined remarks.

                                                  

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