Make sure your ear buds and the mobile device are within the 10m range to each other 

 Low battery level may cause the disconnection from the mobile 

 If the battery level is less than 5% charge the Earbuds

 If the battery level is more than 5% proceed with the next step

 Note: Visibility of the battery level is subjective and may vary brand to brand

In case you are still facing issues you can unpair the device from your mobile with the following steps:

1.Tap and hold the Bluetooth icon on your mobile

2.Look for Air Buds Mini and check the battery level

3.Tap and hold the Bluetooth icon on your mobile

4.Tap on the Air Buds Mini

5.Forget / Delete Air Buds Mini from paired Bluetooth devices

Follow Pairing process again