This is intended as feedback to the GoToMeeting User Experience designer(s). The mute button on the iphone app is a) way too small and b) too close to the edge of the phone.
In my experience the _one_ feature you use over and over during a goto-meeting session is the mute button.
Many men have largish fingers so it is quite hard to target a 4mm wide mute button. Also, the button is 4mm from the edge of the screen. In my case, the "bumper" on the phone case blocks finger access to the very edge of the screen making it even harder to turn mute on and off.
As a minimum solution could you provide an option to make the button about 3x larger?