Put both headphones back in the charging case. Once you open it, pair it with your first phone, remove the other headset, and then close the box.
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2, open the cover again, long press the pairing button on the back of the charging case, and adapt the headset to the second phone, so that you can use the other headset.
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3. After pairing the earphones with two mobile phones, the two earphones can receive signal sources from different phones respectively. For example, the left earphone receives the audio signal of mobile phone A, while the right earphone receives the audio signal of mobile phone B.