My nexus 5 is out of the 15 day window and Google will not let me return it to get a refund. I can barely hear the other caller due to low volume and hissing sounds. The hissing sound also happens when i record a video. I recommend anyone with an issue just to return it as soon as possible if you are in the 15 day period instead of waiting for an update by Google. Do not do the same mistake I did.