en to the following text and in the blank space A Mobile Phone A mobile phone, also known as (1)..., cell phone, or cellular telephone is a very small portable radio telephone. The first mobile phone (2) ... were created in the late 1970s in Japan. A cell phone combines technologies, mainly (3)..., radio, and computer. Cell phones work as two-way radios. They send (4) ... from base station to base station. The waves are sent through antennas. This is called wireless communication. There are different kinds of phones. A flip phone flips open, and is best for calling. Abar phone is shaped like (5)..., and the keys and screen are on one face.​