Have a new iPhone 6S Plus, upgraded from an iPhone 6 - seems that the maximum volume on the speaker is quite a bit lower than on the older 6S. Has anyone noticed a decrease in volume this generation? Unless the room is dead quiet, I need to keep the ringer and main volume at max to have a comfortable listening level. No sound distortion or anything like that - just wondering if anyone else noticed this. If its just me I may take it to an apple store to get checked out, but don't want to risk an exchange because the rest of the device is great.