A mobile phone technology is a great gift to mankind.
The Swedish police department were the first to use mobile phones also called as cell phones in 1946.It was called as car phones because they were fixed in their cars.They were able to make about five to six calls per battery charge.
Motorola released its first developed mobile phone in 1983 to general public withe name Dyna TAC Booox,a huge phone also called bag phone which was almost look like a brick and weighing about 2.5 pounds.Second generation mobile phones were released in the year 1990 and called as 2G phones which had some extra features and coverage.Earlier cell phones were only for verbal communication and gradually multimedia features for entertainment was introduced.
Kudos to Martin Cooper who pioneered research for cell phone in Motorola.He was the first person to make a call with the cell phone invented by him.
Now a days due advancement in technology mobile phones are launched in the market with all new concepts to fulfill the requirement of the user.Well developed mobile phones had music,video recording /playing ,video games,SMS, MMS,internet browser, built in GPS and latest mobile applications like WI-FI, Skype and social networks like Facebook and Twitter.Day by day the size ,thickness and weight also reduced to possible dimension and the user can carry with him any where he likes easily. Some of the advanced features are push to talk,blue tooth,document reader,built in hands-free,internet applications,audio and video outputs,FM radio,organizer and much more to say.The keyboard is replaced with a touchscreen keyboard which appears only when needed.
The first ever iPhone was unveiled by Steve Jobs at the Macworld Conference and Expo in San Francisco in January 2007. Based on the iPod, it was effectively an entire computer that happened to make phone calls.
A brief features Of iPhone:-
Operating system: iphone OS 1.0,
CPU: Samsung S3C 6400,
Speed: 400 MHZ
Screen:3.5" multi touch screen,
Resolution: 480x320,
WI-FI networking: Faster
Audio: out put in stereo with16 bit mini.
Camera: 2MP
Sensors: Accelerometer ,Proximity sensor and Ambient light sensors
Talk time : 8 hrs.
Cost: 4GB iPhone =$499 and 8GB iPhone=$599
These models were discontinued in June 2008 for releasing of iphone 3G.
Third and fourth generation mobile phones are much more advanced in technology.T-Mobile an international mobile company provided cell phone and service to visually impaired users.
Now in the modern days people never live without a cell phone,it became a part of life.
