In today's fast-paced world, staying connected through calls is essential. However, sometimes you might face issues with your earbuds during calls. Here are some common problems and their solutions:

What if the sound does not come out of the earbuds after I answer a call on my iPhone?

If you answer the call using the earbud button, your iPhone will automatically set the earbuds as the audio output device.

If you answer the call on your phone, the device will use the phone speaker by default. To ensure your iPhone always uses your earbuds for calls, adjust the settings as follows:

On your iPhone, go to Settings > Accessibility > Touch > Call Audio Routing, and select Bluetooth Headset.

What should I do if the other party cannot hear me clearly during a call?

1. Ensure that the left and right earbuds are worn in their designated ears.

2. Adjust the wearing angle. Position the speaker close to your ear canal by moving the earbuds toward your earlobe. If it's too far from the ear canal, it may impact sound quality.

3. Ensure no foreign objects obstruct the microphone.

What should I do if the other party cannot hear me during a call?

1. Check the Microphone Status: Ensure that the microphone of your soundcore C40i is not muted. Make sure that the call software is not muted either.

2. Check the Input Settings of the Call Software: Use the input call detection feature in the software to verify that the settings are correct and that the device or call software can access the earbud microphone properly. Restart the call if needed.

3. For Windows Users (Win 10):

- In Settings, search for "Turn on or off mono audio."

- Go to Change Other Sound Settings > Playback.

- Disable Stereo mode and enable Hands-Free mode for optimal audio performance.

Explanation of Modes:

Stereo Mode: In this mode, the device typically does not support microphone usage. It provides better sound quality because it supports high-quality stereo transmission.

Hands-Free Mode: In this mode, the device supports microphone usage, allowing users to make voice calls and play audio simultaneously. However, the sound quality is generally lower.

If you encounter any other issues or your issue has not been resolved, please contact us for further assistance.