I just purchased my first set of Bluetooth earbuds (Tozo T12). Does anyone else notice a spinning/ buzzing sound whenever any activity is occurring? They are completely silent when you are idle but if you touch a button on your phone or open something on the computer it seems to cause the earbuds to "activate" which is when I can hear the spinning/buzzing. Also, if I'm playing audio and turn the volume all the way down I can still hear the spinning/buzzing. If I close out of everything and go "idle" it stops within a few seconds as if the earbuds went into sleep mode. Is this spinning/buzzing sound normal for Bluetooth earbuds? If not, is there a way to fix this?