Take one earbud (L or R) out from charging case, touch earbud till blue light flashes, there’s a voice prompt “ Power On”, keep touching till blue and red light flash alternately, there’s a voice prompt “Paired”.
Turn on your mobile phone Bluetooth, search Bluetooth name “ AIR TWS” and connect it, there’s a voice prompt “ Your headset is connected”.
Take the other earbud out from charging case, touch earbud till blue light flashes, there’s a voice prompt “ Power On”, stop touching, it will pair with the first eabuds automatically, there’s a voice prompt “ TWS Connected”.
The first earbud which connected with your mobile phone is main earbud.
If that doesn't work try this:
How to restore factory setting if L and R earbuds not pairing:
1) take earbuds out from charging case, one of earbuds flashes purple light, the other one flashes blue and red light alternately, that means they're not pairing
2) press L and R earbuds for about 5 seconds to turn off them, in off status, long press L and R earbuds for about 20 seconds, the earbuds will start to restore factory setting
3) after 20 seconds, put L and R earbuds back to charging case and take them out from charging case again, they will start to auto pairing and there will only one earbud flashes blue and red lights alternately if pairing successfully, the other one will not flashes
Note: before connect to your phone, please delete your previous pairing records between earbuds and your mobile phone after you restore earbuds to factory setting