Why does my Samsung S4 cause interference on my TV and radio? How can I stop it?
The interference is due to the phone trying to connect to the cell phone towers for data and information. Some phones have higher interference than others, and aside from using thick metal between the phone and your TV and radio, there isn't much you can do. If there is low signal strength for your phone, the interference may occur more often, but there isn't much you can do for that.
airplane mode activity is the acuse
try to turn airplane mode so it would turn off the wireless, see if this will fix.
Why do speakers make a hideous sound when you put GSM phones near them?
What Is That Noise?