I know AT&T, Verizon and Sprint are going to have identical hardware... Bit are they going to have different model numbers / SKUs and packaging? The iPhones before it had the same box and packaging all around the world, but had a sticker on them indicating the carrier and the terms of service. AT&T iPhone boxes had a sticker with AT&T info on it. Will the iPhone 4S have different sticker/packaging for each carrier, or is it truely 1 iPhone for all with lock status being assigned to the IMEI at the time of purchase. Will is have an AT&T SIM pre-installed as before or will it come uninstalled outside of the iPhone packaging and only if you are an AT&T customer. It would be kinda weird (and wasteful) for Verizon and Sprint customers to have a virgin AT&T SIM card installed in their phone for no reason.