The sound quality of the Buds is tuned based on extensive user experiences and is at a relatively high industry standard. However, individual preferences for sound quality may vary. We recommend downloading the Nothing X App and accessing the Equalizer page to choose preset sound effects. Additionally, you can customise the sound according to your personal preferences in the Custom settings.

1) If the earbuds were playing sound from the meeting, the issue might be due to the settings of the web conferencing program. When selecting the Buds channel in the web conferencing program, it periodically forces the sound route to switch to the earbuds. As a result, when you are connected to a meeting on Device A and receive a call on Device B, the earbuds continue to output sound from the meeting and cannot switch to the mobile phone call.
Solution: Change the audio channel in the web conferencing app to the system default.
2) If there was no sound playing from the web conferencing application on the computer through the earbuds, reset the earbuds to factory settings and then reconnect them, or try restarting the mobile device and attempting again.

The device search is an interactive process between the phone and the earphones, so there may be Bluetooth logic issues on the phone side, causing the earphones to stay undetected for some time. This is not a problem with the earphones. Try turning the Bluetooth on your phone on and off, or restarting the phone and trying the search again.

This is normal. When connected to an iOS device, the Bluetooth connection through the app uses the BLE (Bluetooth Low Energy) protocol. The earphones and the app establish a connection via low-power Bluetooth. During a call, the system prioritises processing power and communication bandwidth for the call as priority. Consequently, the communication over low-power Bluetooth is halted.

Due to compatibility issues with the Bluetooth Fast Pair and dual connection features of some device systems, there may be occasional delays in sound output when you switch music channels or try to connect your device. The issue may occur with TWS Bluetooth earphones on the market. This is a normal phenomenon and does not indicate any abnormality with the earphones. Please feel free to use them with confidence.

Please make sure you are touching the correct control area on the earbuds. If still unable to trigger the function, try switching to a different music app to see if the function works properly. When the touch function is triggered, it sends commands through the path Earbuds > Device > App to the app for processing. But because some apps don't support switching commands, they will not respond to the earbuds' control commands, leading to ineffective gesture control. This issue could potentially affect TWS Bluetooth earphones, but it doesn't indicate a problem with the earphones themselves.

Due to compatibility issues with the Bluetooth protocol versions of devices, some phone or computer models may not support the volume control protocol. This issue could potentially affect TWS Bluetooth earphones. If you encounter this issue, try connecting the earphones to another commonly used device to adjust the volume. If the issue doesn't persist, it means the device, not the earphones, needs checking.

1. Power consumption varies depending on usage scenarios, with voice calls requiring most power.
2. During actual use, factors such as high volume, the bitrate of the audio being played and environmental interference can affect battery life. Try lowering the volume and use AAC mode to enhance your battery life. See instructions below.
3. Upgrade your app to the latest version through the Google/iOS application store, find Settings and press Firmware Update in the app.
4. If the above suggestions do not resolve the issue, press the button on the charging case for 10 seconds to perform a factory reset. Then try again.

Instructions for setting AAC mode:
1) After connecting the earphones to your phone via Bluetooth, select the connected CMF Buds in Bluetooth settings to access detailed Bluetooth device settings. Look for Media audio, select HD (AAC) or directly enable AAC.
2) After connecting the earphones to your phone via Bluetooth, enter Developer mode (go to Settings > Additional settings > Developer options), find Bluetooth Audio Codec and select AAC.
Due to differences in phone brands and models, the exact setting paths may vary. Please refer to the actual settings.

The Buds support active noise cancellation, with a maximum support of 42dB. If the ear tips are not fitted properly, noise will not be cancelled out effectively as a result of poor air tightness. The earbuds come with three different ear tip sizes. Try changing to different size.

1. Continuously charge the Buds for 4 hours and see if they power up.
2. Replace the cable and charger.
3. Charge the earphone in a lower temperature enviroment and try again.

If the issue remains unresolved, please contact our customer service.

1. Check if there is dirt inside the charging port of the case.
2. Replace the cable and/or charger.
3. Plug the charger in and out several times.

If the issue remains unresolved, please contact our customer service.

1. Check if there is any dirt inside the charging pin of the earbuds and the pogo pin on the charging case.
2. Gently shake the charging case to ensure that the earphone charging pins and the pogo pins on the charging case make full contact, then check if charging restores to normal.
3. Place the earphone in the charging case and connect to the charger for 10 minutes to see if it recovers.
4. Open the case, long-press the function button for 10 seconds, wait until the indicator LED is on, and search again.

1. The earphones will automatically disconnect when the Bluetooth connection exceeds the range. If you return to the connection range within 10 minutes, they will automatically reconnect successfully. If they stay outside of the connection range for more than 10 minutes, they will enter a timeout state without a connection. You can manually reconnect them by placing the earphones into the charging case, closing the charging case for 5 seconds, and then opening the charging case to power on the earphones and initiate the connection again.
2. Long-press the function button on the charging case for 5 seconds and reset to factory settings, complete when the indicator light flashes red for 10 seconds. Then re-pair for use.
3. If the issue remains unresolved, please download and upgrade to the latest version of the Nothing X App and try again.

1. When connected to multiple devices, the earphones will prioritise reconnecting with the last device connected upon powering on again. Please confirm if the last device you used the earphones with is the one you are currently using.
2. If the earphones leave the charging case and don't find the last connected device within 1 minute, they will enter a timeout state. To exit it, place the earphones back into the case, close the lid for 5 seconds and then reopen to initiate a new connection.
3. Perform a factory reset by holding the function button on the charging case for 10 seconds or more, and then pair the earphones again.
4. If the issue remains unresolved, please download and update to the latest software using the Nothing X App.

Note: All device customisations are already integrated into the settings of Nothing OS version 1.1.4 and higher. Please keep the Nothing X app updated via the Google Play Store.