A slight problem with my samsung s5

[AC Question]

This might seems a little overreacted, but i just bought my galaxy s5 like a week ago, and it works perfectly until i notice some small problem, which is a very slight problem, sometimes the clicking sound disappear and make no sounds whatsoever when i click on things and the clicking sound comes back again in like 20 seconds. I know this sounds stupid but is this something to worry about? i mean i know it didn't really affect my activities with my phone but it bothers me a little bit.

 

[B. Diddy]

Try booting into Recovery and wiping the cache partition: Reset: Samsung Galaxy S 5 | T-Mobile Support