I've just started to notice this recently, that a couple of times a day or sometime once in a few days the volume of my earpiece or speakerphone on calls get considerably lower. After I notice it (especially having a conversation in a slighlty noisy area or using speakerphone with a few people) a reboot and phone is back to it's nice and loud speakerphone and earpiece. Anyone experience this? Any ideas on the culprit or a fix? Thanks