Anyone else hearing this? I can hear it, though mine is lower than the 15khz mentioned here. From BGR: Are you enjoying your brand new iPhone 3G S? Did you get a 16GB or a 32GB? Well, that wont matter if people are experiencing what we are. There seems to a problem with sound files on the 3G S and the result after theyre triggered. After they are done playing like the unlock sound, SMS sound, for instance the iPhone emits a high-frequency tone. No, were not kidding. Something pretty high around 15KHz. Weve confirmed this isnt a local isolated issue with our phone, and since some people cant hear these types of high-pitched tones, your iPhone might produce it yet youd never notice. Were 99% sure its software related because if you set the phone to vibrate, big surprise, no high-pitched tone. So, anyone out there experiencing this? Its amazing this was skipped over in the many reviews published, but oh well. Hopefully Apple fixes it soon because this is kind of painful and pretty outrageous.