My Nexus 5 has an annoying buzzing sound when it is set on low volumes. Any application using the speaker produces this, but when I get a call the ringtone doesn't buzz at all.
So I came to the conclusion that the speaker IS NOT physically broken.
When I plug in earphones and run an application the sound is working fine as well.
What is going wrong and how I can fix this? Should I try asking Google directly?