iPhone 4
The iPhone 4 is a smartphone that was designed and marketed by Apple Inc. It is the fourth generation of the iPhone lineup, succeeding the iPhone 3GS and preceding the 4S. Following a number of notable leaks, the iPhone 4 was first unveiled on June 7, 2010, at Apple's Worldwide Developers Conference in San Francisco, and was released on June 24, 2010, in the United States, United Kingdom, France, Germany, and Japan. The iPhone 4 introduced a new hardware design to the iPhone family, which Apple's CEO Steve Jobs touted as the thinnest smartphone in the world at the time; it consisted of a stainless steel frame which doubled as an antenna, with internal components situated between two panels of aluminosilicate glass. The iPhone 4 introduced Apple's new high-resolution "Retina Display" (with a pixel density of 326 pixels per inch), while maintaining the same physical size and aspect ratio as its precursors, Apple's A4 system-on-chip, along with iOS 4—which notably introduced multitasking functionality and app folders. It was the first iPhone at the time to include a front-facing camera, which made possible Apple's new FaceTime video chat service, and the first to be released in a version for CDMA networks, ending AT&T's period as the exclusive carrier of iPhone products in the United States.
iPhone 4 (GSM model) in black | |
| Developer | Apple Inc. |
|---|---|
| Manufacturer | Foxconn (UMTS/GSM model) Pegatron (CDMA model) |
| Slogan | "This changes everything. Again." |
| Generation | 4th |
| Model | A1332 (GSM model) A1349 (CDMA model) |
| First released | GSM model (black): June 24, 2010[a] CDMA model (black): February 10, 2011[a] GSM and CDMA models (white): April 28, 2011[a] |
| Discontinued | September 10, 2013 |
| Predecessor | iPhone 3GS |
| Successor | iPhone 4S |
| Related | iPod Touch (4th generation) |
| Type | Smartphone |
| Form factor | Slate |
| Dimensions | 115.2 mm (4.54 in) H 58.6 mm (2.31 in) W 9.3 mm (0.37 in) D |
| Mass | 137 g (4.8 oz) |
| Operating system | Original: iOS 4.0 (GSM model), iOS 4.2.5 (CDMA model) Last: iOS 7.1.2, released June 30, 2014 |
| System-on-chip | Apple A4 |
| CPU | 1 GHz (Underclocked to 800 MHz) single core 32-bit ARM Cortex-A8 |
| GPU | PowerVR SGX535 |
| Memory | 512 MB LPDDR DRAM |
| Storage | 8, 16, or 32 GB flash memory |
| Battery | 3.7 V, 5.3 Wh (1,420 mAh) Lithium-ion battery |
| Display | 3.5 in (89 mm) diagonal 3:2 aspect ratio widescreen LED backlit IPS TFT LCD 960×640 resolution at 326 ppi (0.61 megapixels) 800:1 contrast ratio (typical) 500 cd/m2 max brightness (typical) Fingerprint-resistant oleophobic coating on front and back glass |
| Sound | Single loudspeaker 3.5 mm TRRS, frequency response: 20 Hz to 20 kHz |
| Rear camera | 5 MP back-side illuminated sensor HD video (720p) at 30 frame/s 1.75 μm size pixels 5× digital zoom 4 element lens LED flash Photo and video geotagging |
| Front camera | 0.3 MP VGA (480p) at 30 frame/s Tap to focus video or still images Photo and video geotagging |
| Connectivity | Wi-Fi (802.11 b/g/n) (2.4 GHz only) Bluetooth 2.1 + EDR GSM model: quad-band GSM/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 is not yet officially supported by Apple) CDMA model: dual-band CDMA/EV-DO Rev. A (800, 1,900 MHz) |
| Data inputs | Multi-touch touchscreen display Dual microphone 3-axis gyroscope 3-axis accelerometer Digital compass Proximity sensor Ambient light sensor |
| SAR | Model A1332 Head: 1.17 W/kg Body: 1.11 W/kg Model A1349 Head: 1.18 W/kg Body: 0.87 W/kg |
| Hearing aid compatibility | GSM 3G 850/1,900 MHz M4, T4 2G 850 MHz M3, T3 2G 1,900 MHz M2, T3 CDMA M4, T4 |
| Website | Apple – iPhone 4 – Video calls, multitasking, HD Video, and more at the Wayback Machine (archived October 14, 2010) |
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The iPhone 4 received a largely positive reception, with critics praising its revamped design and more powerful hardware, in comparison to previous models. While it was a market success (with over 600,000 pre-orders within 24 hours), the release of the iPhone 4 was plagued by highly publicized reports concerning abnormalities in its new antenna design that caused the device to lose its cellular signal if held in a certain way. Most direct contact with the phone's outer edge would cause a significant decrease in signal strength. Apple released iOS 4.0.1 to try to fix these issues, but were unsuccessful.
The iPhone 4 spent the longest time as Apple's flagship iPhone model at fifteen months. Although the succeeding 4S was announced in October 2011, the 4 continued to be sold as a midrange model until September 2012, and thereafter as the entry-level offering in Apple's lineup until September 2013 with the announcement of the iPhone 5S and iPhone 5C. The iPhone 4 had one of the longest lifespans of any iPhone ever produced, spanning close to four years and available in some developing countries until early 2015.