MOBILE MASTERY

                                

                                 A  mobile is a portable device that can be carried around and       used for a variety of purposes. Mobiles are often called cell phones or              smartphones. Mobile telephone, portable device for connecting to a telecommunications network in order to transmit and receive voice, video, or other data. Mobile phones typically connect to the public switched telephone network (PSTN) through one of two categories: cellular telephone systems or global satellite-based telephony.