The volume on my iPhone 6s running iOS 9.0.2 doesn't seem to be consistent. My ringers and text alerts come through at normal volume but other alerts come through so quiet I don't hear them. I use speaker phone for my conference calls every morning at work and sometimes I can hear it, and other times I can't. My husband sent me voice memos today and at max volume I still had to hold the speaker against my ear to hear them in my silent apartment. I was starting to wonder if I got a bad phone, but my husband is reporting the same issues on his iPhone 6 (which is my old phone that he took over when I got the 6s) since upgrading it to iOS 9. In the year I had the 6, it NEVER had this issue so I'm curious if it may actually be software related. Yes, I've checked that my volume setting are turned up, notifications are turned on, and that my mute switch isn't accidentally flipped. I have not tried a restore yet, since I set the 6s up as new when I got it. Any ideas?