Apple iPhone 4S

The iPhone 4S is a touchscreen smartphone from the Apple company. Functioning as the successor to the company's standard iPhone 4 device, this model incorporates a number of hardware upgrades and never-before-seen software features in effort to appeal to a wider variety of users.

Available in black and white color options just like its predecessor, the 4S adds a 64GB storage option in addition to the existing 16 and 32GB capacities. Retaining the 3.5-inch IPS retina display, the unit's rear-facing camera has been upgraded from 5 to 8 megapixels with an f/2.4 aperture lens for brighter, bolder shots. Video recording quality has been boosted to full 1080p from the previous 720p standard, with 30 frames-per-second rendering added to the iPhone's front-facing VGA camera. The inclusion of a dual-core A5 processing chip provides a considerable boost in computing performance, nearly doubling the phone's graphical support for the improvement of videos and applications alike. Perhaps most notable amongst the 4S feature set is the addition of the Siri voice assistant, an intelligent software peripheral that responds to questions and commands prompting call and text support, maps and weather information, scheduling, directions and more. Running the fifth-generation of Apple's iOS platform, the unit also introduces iCloud online content storage for instant wireless access to the user's music, photos and documents.