Question

which frequency is used for microphone of the mobile​

Answer 1

It depends entirely on the phone, they will all use different microphones/circuits. Generally, an audio mic will be within a range of 20Hz - 20kHz. Many cheaper mics ( or intended for voice only) will have a lower cutoff frequency of 15kHz or less.

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Answer 2

Explanation:

all mobile have different frequency generally audio mic of mobile are in range of 20Hz to 20kHz

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