A:AnswerTurn on bluetooth on your phone and hold middle button on the headset after fully charging. You should see your headset ready to pair then connect.
A:AnswerYes, I used it in an Android phone. Actually it works for any device supporting Bluetooth like smartphones, and laptops. The device shows up like WI-C310 on the BT device list so it is really easy to pair
A:AnswerNot for me. My WF-1000xm4 and WH-1000xm4 do, but not these. Keeps saying register through bluetooth, but never picks them up. Probably what you're seeing.