Apple iPhone 4S 16 GB AT&T, White This follow-up to the very popular iPhone 4 features a faster Apple A5 dual-core processor and better 8 megapixel camera The iPhone 4S also features Siri - a voice assistant heeding natural-language questions and commands, and taking dictation Other features include a gorgeous 3.5-inch high-resolution display, iPod music player, Wi-Fi, and 16GB of of internal memory The Apple iPhone 4S also comes equipped with GSM, CDMA, and WCDMA modes for international use This product has been carefully audited and is certified to be 100% functional.