A tiny microphone on a phone works by converting sound waves into electrical signals that can be processed and amplified by the phone's electronics. The microphone has a diaphragm that vibrates in response to sound waves and a tiny magnetic coil attached to the diaphragm. As the diaphragm vibrates, it moves the coil back and forth within a magnetic field, generating an electrical current that corresponds to the sound waves. This electrical current is picked up and processed by the phone's audio hardware, which converts it into digital data that can be transmitted or stored for playback.
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