popping noise driving me mad on s5!
I have the same problem with a new s5 from 3 network. It's highly annoying and doesn't seem to matter which music player is used, power saver on or off and volume low or high on the phone or external speaker via an auxiliary cable. The same cable might I add I used for months for my S3. This just adds to annoying aspects to the s5 and I'm already looking for alternatives to Samsung even though my contract still has 23 months left! A fix for this is needed and will send the handset back for replacement if I have to!