Can't hear people unless switched to speakerphone on Galaxy S4 I have Samsung Galaxy S4 and I cannot hear callers unless the speakerphone is on. The caller can hear me well but there is only a very faint which is inaudible sound back.

I have gone to all the settings but it does not change anything. 

How can I fix this?
I fixed mine using following instructions:

Go to Settings &rarr; My Device &rarr; Sound &rarr; Samsung Applications &rarr; Press Call &rarr; Turn Off Noise Reduction.