The iPhone 4S has a 3.5″ 960 by 640 (326 ppi) “Retina display,” like the previously released iPhone 4. It is LED-backlit, uses IPS (In-Plane Switching) technology, has an 800:1 typical contrast ratio, a 500 cd/m2 typical maximum brightness and is coated with a fingerprint-resistant “oleophobic” (oil repellent) coating. The back of the phone, which also is made of glass, has an oleophobic coating as well.
Although the iPhone 4S* looks like the iPhone 4 before it, it is considerably more powerful and most notably unveils a new voice-controlled “intelligent assistant” named Siri.
Like the iPhone 4, the iPhone 4S uses the same all stainless steel body design with an ultra high-density 3.5-inch, IPS, LED-backlit 960×640 326 ppi multi-touch “retina” display, dual noise-cancelling microphones, mobile and data antennas integrated in the “metal band” that wraps around the sides of the phone, and a chemically hardened “aluminosilcate” glass front over both the display and a black or white frame and the chemically hardened black glass back, too. Both the front and back have an “oleophobic” oil repellent coating, as well.
However, the iPhone 4S is a “world phone,” supporting both GSM and CDMA networks (UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz), and CDMA EV-DO Rev. A (800, 1900 MHz), and the “antenna automatically switches between send and receive.” It supports 802.11b/g/n, Bluetooth 4.0, and HSDPA of up to 14.4 Mbps, too.
The iPhone 4S also has dual cameras — an 8 megapixel HD video/still camera (1080p at 30 FPS) with a “backside illuminated sensor,” and an LED flash on the rear and a VGA quality video/still camera on the front designed for video conferencing over a Wi-Fi network with Apple’s included “FaceTime” application.
It is powered by a dual-core “Apple A5” processor, has 512 MB of RAM, and has 8 GB, 16 GB, 32 GB, or 64 GB of internal storage (the 32 GB and 64 GB options were discontinued September 12, 2012, the 16 GB option was replaced by an 8 GB option on September 10, 2013, and this 8 GB configuration was discontinued on September 9, 2014).
Apple reports that the iPhone 4S provides “up to” 40 hours of audio playback, 14 hours of talk time on 2G, 8 hours of talk time on 3G, 6 hours of Internet use on 3G, 9 hours of Internet use on Wi-Fi, 10 hours of video playback and 200 hours of standby time.
In the US, the iPhone 4S originally was available locked to and subsidized by either AT&T, Sprint or Verizon with 16 GB, 32 GB or 64 GB of storage, for US$199, US$299, or US$399, respectively, with a two-year contract. It also originally was available “unlocked and contract-free” for US$649, US$749, and US$849.
On September 12, 2012, Apple dropped the price of the 16 GB carrier-locked model to US$99 with a two-year contract and dropped the unlocked and contract-free option to US$549.
Finally, on September 10, 2013, Apple introduced a lower capacity 8 GB model that was US$0 in the US locked to AT&T, Sprint, or Verizon with a two-year contract. This model was US$450 if unlocked and contract free. It was discontinued entirely on September 9, 2014.
Unfortunately, the unlocked model is manually blocked from working on CDMA networks.
*For those interested in the smallest of details, Apple quietly changed the name of the iPhone 4S to iPhone 4s (lower case) on September 10, 2013, presumably for consistency with the iPhone 5s models introduced at the same time.
October 4, 2011
8, 16, 32, 64 GB
Apple reports that the iPhone 4S supports "AAC (8 to 320 Kbps), Protected AAC (from iTunes Store), HE-AAC, MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, 4, Audible Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV."
Apple does not formally specify photo formats for the iPhone 4S. The Safari web browser, however, supports JPG, GIF, and TIFF images, and the iPod function of the iPhone 4 supports images synchronized from iTunes.
Apple reports that the iPhone 4 supports "H.264 video up to 1080p, 30 frames per second, High Profile level 4.1 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format."
On an external display, it supports "576p and 480p with Apple Component AV Cable; 576i and 480i with Apple Composite AV Cable (cables sold separately)" as well as video mirroring and video out support up to 1080p. It also supports AirPlay Mirroring to Apple TV at 720p.