evolution of mobile phones

  Let us mention that present-day people cannot imagine life without a cell phone. For us, a smart phone is a wonderful piece of engineering, but in the past, cell phones were invented only for communication. Now, a person without a cellphone will be considered an odd person. Smart phones were developed in the late 1990s, and they improved with larger displays, Bluetooth, and cameras to become smart phones. Furthermore, the technological revolution is even more promising. We can't even imagine how a cell phone will look in ten or twenty years. Smart phones simplify our lives by replacing watches, digital cameras, microphones, MP4 players, and MP3 players.