Is anyone having same issue??Normally Samsung galaxy m21 works perfectly with bluetooth headphone but if you switch on your hotspot simultaneously then you started getting disturbance in audio in bluetooth headsets...Tried all steps like resetting phone, tried different headphones and even tried to check problem in safe mode.There is some problem with software , I think so.Without hotspot , it works perfectly...Please check on your device.I purchased device recently just some days before so it is new device.
