Note-:The first time you use the earphones, you need to connect to the Bluetooth of iPhone
You only have to do this at the first time.
Plug in the earphones.
Go to Settings > Bluetooth (turn on) > Select "IOS"
2.Bluetooth Pairing:-
Step 1: Your iPhone Must be Switched On
Step 2: Turn On The Bluetooth Headset Function In Your iPhone Setting
Step 3: Plug In The Headphone Jack Into iPhone
Step 4: iPhone Will Search Bluetooth Earphone And Finds The Headphone Called
Step 5: Connect And Enjoy Your Headphone With Highest Sound Quality