Download APP to your mobile phone according to the instruction manual of AI translation function - Turn on the headset, connect the headset in the Bluetooth list of your mobile phone - Open the APP and scan the matching code on the instruction manual to add your headset to the APP in ‘Add Device’ (the matching QR code is at the end of the translation instruction manual, if you can't find it in the English page, please turn to the Chinese page to check it) - Select the mode and the mode of translation. (If you can't find the matching code at the end of the translated manual, please turn to the Chinese page to check it) - Select the mode and language, and start using!