Iphone 4s

                                       iPhone 4s  

Origin;

As early as May 2011, some leaks had a fairly accurate description of the iPhone 4S including the name "iPhone 4S" The iPhone 4S was unveiled at Apple's "Let's Talk iPhone" event on October 4, 2011,

Orders could be placed on October 7, 2011 and mainstream availability in retail stores began on October 14, 2011 in the United States, Australia, Canada, the United Kingdom, France, Germany, and Japan. Sales peaked over its predecessor with more than a million sales in the first twenty-four hours of order availability and more than four million sales in the first four days of retail availability. Further worldwide rollout, including 22 additional countries on October 28, came over the next several months.

Hardware 

Hardware;

The iPhone 4S uses the Apple A5 system-on-chip (SoC) that incorporates an Imagination Technologies PowerVR SGX543 graphics processing unit (GPU). This GPU features pixel, vertex, and geometry shader hardware supporting OpenGL ES 2.0. The SGX543 is an improved version of the GPU used in the iPhone 4S's predecessor, the iPhone 4
The camera on the iPhone 4S, also known as an iSight camera, can take 8-megapixel photos (3,264 by 2,448 pixels) and record 1080p videos at up to 30 frames per second with upgraded quality (30% better clarity, 26% better white balance, color accuracy) due to an additional lens, IR filter, a wider f/2.4 aperture, and Image signal processor (built-in A5).

Design; 

The iPhone 4S has a stainless steel, dual cellular antenna design, identical to iPhone 4 CDMA. Apple redesigned the antenna in the iPhone 4 CDMA after some original iPhone 4 users reported cellular signal attenuation problems as a result of holding the phone in certain positions

It is 115 millimetres (4.5 in) high, 59 millimetres (2.3 in) wide, and 9.4 millimetres (0.37 in) deep, 
 The internal components are situated between two panels of aluminosilicate glass, described by Apple as being "chemically strengthened to be 20 times stiffer and 30 times harder than plastic," theoretically allowing it to be more scratch-resistant and durable than the prior models.

Brand	Apple Inc.
Manufacturer	Foxconn & Pegatron
Generation	5th
Compatible networks	GSM, CDMA, 3G, 3G+, HSUPA
First released	October 14, 2011; 7 years ago
Availability by region	October 14, 2011 October 28, 2011 November 11, 2011 November 25, 2011 December 16, 2011 January 13, 2012 January 27, 2012
Discontinued	September 20, 2012; 6 years ago (64GB) September 9, 2014; 4 years ago (8,16,32 GB) February 17, 2016; 3 years ago (India)
Units sold	Four million in first three days of initial sales (October 14–17, 2011) 60+ million total
Predecessor	iPhone 4
Successor	iPhone 5
Type	Smartphone
Form factor	Touchscreen
Dimensions	115.2 mm (4.54 in) H 58.6 mm (2.31 in) W 9.3 mm (0.37 in) D
Mass	140 g (4.9 oz)
Operating system	Original: iOS 5 Last: iOS 9.3.5, released August 25, 2016
System on chip	Dual-core Apple A5
CPU	1.0 GHz (Underclocked to 800 MHz) dual-core 32-bit ARM Cortex-A9
GPU	PowerVR SGX543MP2
Memory	512 MB DDR2 RAM[4]
Storage	8, 16, 32, or 64 GB
Battery	3.7 V, 5.3 Whr (~1430 mAh) Lithium-ion battery[5]
Data inputs	Multi-touch touchscreen display Dual microphone 3-axis gyroscope 3-axis accelerometer Digital compass Proximity sensor Ambient light sensor
Display	3.5 in (89 mm) diagonal 3:2 aspect ratio widescreen LED backlit IPS TFT LCD 960×640 Resolution at 326 ppi 800:1 contrast ratio (typical) 500 cd/m2 max. brightness (typical) Fingerprint-resistant oleophobiccoating on front and back glass
Rear camera	Sony Exmor R IMX145[6] 8 MPback-side illuminated sensor[7] HD video (1080p) at 30 frame/s IR filter Aperture f/2.4 5 element lens Image signal processor (built-in A5) Face detection (stills only) image stabilization
Front camera	0.3 MP VGA (480p)
Sound	Single loudspeaker 3.5 mm TRRS, 20 Hz to 20 kHz frequency response (internal, headset) 3.5mm audio jack Microphone
Connectivity	Wi-Fi (802.11 b/g/n) (2.4 GHz only) Bluetooth 4.0 Combined GSM/CDMA antenna: quad-bandGSM/GPRS/EDGE (800 850 900 1,800 1,900 MHz) Quad-band UMTS/HSDPA/HSUPA (800 850 900 1,900 2,100 MHz) (800 MHz unannounced) Dual-band CDMA/EV-DO Rev. A (800 1,900 MHz) GLONASS, Global Positioning System (GPS)
SAR	Head: 1.18 W/kg Body: 1.19 W/kg

People n lines  buy iPhone 4s n China

 four million sales in the first four days