hola, disculpa que la escriba en español, al final pondré la traducción que de el traductor de Google.
A breves rasgos debes poner los auriculares en la base de carga, desvincular los auriculares, apagar el bluetooth.
Después de eso debes ponerte los auriculares, presionar a la vez ambos sensores por 10 segundos, hasta que se reinicien, luego regresas al bluetooth de tu teléfono y los vinculas.
Aquí te pego la respuesta original y el link.
If P20i fails to pair with your devices and has issues such as failing to reconnect with your device, or your phone cannot detect P20i on the Bluetooth list, then these tips should help you resolve these issues.
- For your Bluetooth device (phone/tablet/etc.)
Turn on the Bluetooth device (such as a phone, computer, etc.), forget all the pairing records on your device, and turn off Bluetooth.
- Reset the earbuds but make sure your earbuds have enough battery
- Take the earbuds out of the charging case, and wear the earbuds, while long pressing the left and right earbuds 10S, hear a beep, indicating a successful reset.
- Pair the headphones with your device
Turn on Bluetooth on your Bluetooth device and search for soundcore P20i and pair.
https://support.soundcore.com/s/article/How-to-Fix-soundcore-P20i-Earbuds-Pairing-Issues#:~:text=Turn%20on%20the%20Bluetooth%20device,device%2C%20and%20turn%20off%20Bluetooth.&text=-%20Take%20the%20earbuds%20out%20of,beep%2C%20indicating%20a%20successful%20reset.