Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3) Along w/ Siri issues, is anyone else have any issues w/ the sound or screen brightness on their iPhone 4S? At times when I type or lock my phone it will be super loud (like max volume), then the next minute it's back to normal like nothing has changed. My screen brightness seems to also have a hard time returning to full brightness at times. Just seems really dim. (yes, I've checked my brightness level. Had to even up it because it seemed so low.) Hope an update comes soon if these are issues. Hope everyone's is working well!