Mobile phones have become an integral part of our lives. We use them for communication, entertainment, shopping, and a host of other purposes. While most of us think we know all there is to know about mobile phones, there are still some lesser-known facts that are worth exploring. In this blog, we will look at the top 10 unknown facts of mobile phones. The first mobile phone was invented in 1973 by Martin Cooper, a researcher at Motorola. The phone weighed 2.5 pounds and cost $3,995. It took another 10 years for mobile phones to become commercially available. The first mobile phone call was made on April 3, 1973, by Martin Cooper, who called Joel Engel, the head of research at Bell Labs. The call was made using a prototype of the Motorola DynaTAC 8000X, the first commercially available mobile phone. The first mobile phone with a built-in camera was the Sharp J-SH04, launched in 2000. The camera had a resolution of 0.1 megapixels and could only take black and white pictures. The fir