The iPhone 4S 16GB in black features the iCloud software to help save backups of your data. Because its screen is made of Corning Gorilla Glass with an oleophobic coating, the intensity of damage is significantly reduced from bumps and falls. The iPhone 4S is being powered by iOS. Featuring a 3.5 mm jack, the iPhone can be connected to external devices such as headphones. You can access the Internet from anywhere by using the Wi-Fi functionality, where you can also gain access to exclusive apps and software via the Apple Store. This device is locked to Three and compatible with Vodafone, EE, O2 Carriers.