Many owners Samsung Galaxy S4, Samsung Galaxy Note 3 and other Samsung Galaxy models, they complain that after a while ringing volume, Ringtone, and Notification sound decreases close to minimumWithout user intervention whatsoever.
How do we not fall for the sound and volume of water and notifications on Samsung Galaxy
The problem is solved quite simply. Samsung smartphones have an option in settings that the phone should if they are or not in your pocket. Depending on what she "says" sensor that responds to this option, the phone will ring louder or slower. It seems that error tells Lolipop soft phone that is always in hand holder, and so volume for notifications si Ringing It is automatically set to a minimum. To prevent decrease the sound volume is better to disable this option.
Go in "Settings"> Uncheck the box next to"Increase volume in pocket"
With unchecking this option, set the ringer volume will remain at the level set by you, without them longer automatically change when the phone is in your pocket, purse, or desk in hand.