This might be a learning curve. How long have you had your phone? Once you understand where to hit the button it should work everytime.
I notice the same thing with all of the hard buttons on the bottom. At times, they just aren't responsive. Takes a bunch of tries to get them to work at times.
I notice the same thing with all of the hard buttons on the bottom. At times, they just aren't responsive. Takes a bunch of tries to get them to work at times.