a) Ensure user is following the correct way to make dual pairing

b)After connecting the headphone with one mobile phone then ensure headphone is in pairing mode again while trying to connect with the second mobile phone device

a) Follow the pairing process to connect device A

b) Turn OFF Bluetooth of Device A

c) Turn ON Bluetooth of Device B

d) Connect your Noise Powr with Device B

e) Switch on Bluetooth of Device A

f) Now both the devices are connected with your Noise Powr