Short disturbance during calls with my Galaxy S3 LTE SHV E210s I have a Samsung Galaxy S3 4g/LTE phone. When I call any one or when I receive a call, there is a disturbing noise, like scratching a dvd movie disc. 
What caused the problem and how do I solve this?
Update you phone to 4.4.4 kitkat version from wifi and then type on phone keybad *#9090# and press call. This will show the hidden menu of your SHV-E210S. 

Got to Network Mode Set -> GSM_Enable. This will turn your phone to work for GSM networks. Return to main screen and restart your phone.