The recently launched Apple iPhone 4S 16 GB sold over three million units within three days flat of its official launch. This kind of sales is unrecorded in mobile phone history. The fifth generation Apple iPhone has come out in three memory based models. These are – Apple iPhone 16 GB, Apple iPhone 32 GB, and Apple iPhone 64 GB. Of these three choices, it is the Apple iPhone 4S 16 GB that is flying off the mobile phone store shelves in double quick time. And backing it all are a very lucrative set of Apple iPhone 4S 16 GB contracts and other mobile phone deals like the SIM free and pay as you go mobile phone offers. It is pretty apparent that Apple has left no stone unturned in ensuring that its next generation iPhone ill prove to be a winner all the way. The only feature that it has retained from the predecessor iPhone 4 is the screen size of 3. 7 inches. Still the Retina Vision display technology hits you with full force and the combined effect of high resolution, and high definition all made this a totally visually compelling experience. The Apple iPhone 4S 16 GB has latest Apple iOS version of 5.0 running its various functions. Apple has also given the new iPhone the all powerful dual core A5 chipset. The 3G network compatibility and Wi-Fi are any way there extending lightening fast web browning and video watching. The `Seri' voice command feature that everyone is talking about is something that we are sure you wil try out more often than many of the other features on board this magnificent smartphone device. Apple has given the Apple iPhone 4S 16 GB a very fine eight mega pixel camera as the primary shooter. It has 1080p high definition video recording ability among others. You also have the more basic primary snapper on the front for the Face Time video calling.