Recently I bought a Sony XPERA U mobile phone. I found dedicated camera button was not working smoothly. I have removed the back and cover and fix but the button did not work. Finally I look into the forum and there someone posts.......press harder.....and I tried........but .............bad.............luck 
all of a certain I found camera button is broken........
So is there anybody to help me to know the approximate cost of replacing camera button.....
or, Is there any problem if I don't replace this (this is to mention that, touch screen is working well and im happy with it no problem at all)
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