I upgraded to a Samsung Galaxy S4 from an iPhone 4 today and have been setting various settings. When I first made a call there was a mute button in the middle bottom of the screen. Now, after I have changed settings, there is no more mute button.
I am at a lost as to what I changed to make my mute button disappear.
What do I do to see the mute button?
Note: I am referring to muting my phone during a call.