Paragraph on Mobile Phone in 20 lines
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A mobile phone (also known as a hand phone, cell phone, or cellular telephone) is a small portable radio telephone. The mobile phone can be used to communicate over long distances without wires.
Answer:
A mobile phone, cellular phone, cell phone, cellphone, handphone, or hand phone, sometimes shortened to simply mobile, cell or just phone, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network (PSTN). Modern mobile telephone services use a cellular network architecture and, therefore, mobile telephones are called cellular telephones or cell phones in North America