a) Follow the Pairing process 

1    Open the charging case. 

2    Turn on the Bluetooth of your device. 

3    Select Add Device and from the list of devices, select Noise Buds VS401.

b) Set your Mobile Phone to Airplane Mode and then again set to normal mode, mobile's BT working will back to normal if any small bug is there with BT's working. If succeed then ok otherwise move to step- c

c) Restart mobile phone to refresh Mobile Phone's working and Mobile RF will also back to normal.

If Restart is not available then Power OFF and ON the Mobile Phone.

Now again try and follow the pairing process"

d) If device's LED shows pairing mode and its name is not visible in BT search result interface, Try to refresh BT search result in Mobile Phone.

If still can't see the device name then try pairing process with different mobile phone

Note: If device is working fine with other Mobile Phone then there are chances that issues might be with the previous Mobile Phone as well"

e) RESET the device 

1- Remove device name from Bluetooth Interface
2- Take out the earbuds from the charging case.
3- Long press both the earbuds for 5 seconds.
4- Place both the earbuds inside the charging
  

 case and repeat the pairing process. 

f) If above mentioned 4 steps doesn't work then please check if LED is there or not. if no LED then The device might be out of battery.

Note: If device is not getting charged (no LED blinking while putting it on charge), please raise an online complaint on complaint Portal