C castewa88 New member Nov 10, 2012 9 0 0 Visit site Nov 20, 2012 #1 What are the 5 small dots that form a circle on the top of the 920 next to the headphone jack?
S socialcarpet Banned Apr 4, 2012 1,893 0 0 Visit site Nov 20, 2012 #2 It's a second microphone to help the noise canceling function.