Perform the following steps to enable the noise-cancelling function of the headset
Put the earphones into the charging case, open the cover, press and hold the function button of the cover for 2 seconds until the white light flashes, and the earphones enter the pairing state.
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Open your phone's Settings, tap Bluetooth,
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Turn on Bluetooth, click to pair headphones, after successful connection, click Settings on the right side of headphones,
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Click on active noise reduction,
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Click to turn on noise reduction.
Noise-cancelling earphones generally have a button on the side of the right ear, pressing the button will have three modes, noise reduction, environmental sound on, environmental sound off. Press the noise-cancelling option to turn it on.