First, let's have a look at the package, which looks minimalistic. It is a square box on which there is "I9S-TWS" and a picture of the product, and at the top right corner is "double V5.0." The "double V5.0" means that both earbuds pick up the sound while you're making a phone call, which improves the call quality.

Step 1: Turn on i9s earbuds

Step 2: Click on one of the earbuds button quickly, make the two Bluetooth earphone paired

Step 3: When one eaephone red and blue lights flash alternately, and the other blue light flash slowly. The earbuds are paired successfully.

Step 4: Open the Bluetooth on the phone. Choose i9s-tws in the Bluetooth device list.

Note:

• i9S earbuds also supports single and double pairing
• If you failed to pair the earbuds, you can check in this post: How to fix i9s TWS earbuds Bluetooth pairing problems?

How to answer the calls?

Answer the call: press once the button

Reject the call: press twice the button

How to charge the i9s TWS earbuds

Method 1: Charged by cable directly

Method 2: Charged on the charging case.

For Gearbest customers: If you've purchased i9s TWS from us and still have problem after using the firmware, please do not hesitate to get in touch with us. Just fill in the ticket with your questions at our Support Center and send it to us. We will do our best to deal with your problem as soon as possible. We are always happy to help