The iPhone 4 was the first iPhone model to feature a "Retina Display" with a resolution of 640 x 960 pixels.

iPhone 4

iPhone 4

The iPhone 4 was a revolutionary smartphone that was released by Apple on June 24, 2010. It was the fourth iteration of the iPhone series, and it brought several improvements over its predecessor, the iPhone 3GS. The iPhone 4 was a significant upgrade in terms of design, display, camera, and performance. In this article, we will discuss all the features and specifications of the iPhone 4 in detail. Design and Build Quality: The iPhone 4 was a major upgrade in terms of design. It was the first iPhone to feature a glass front and back with a stainless steel frame that doubled as the phone's antennas. The glass panels were made from a special type of glass called aluminosilicate, which was stronger and more scratch-resistant than the glass used on previous iPhones. The phone's sleek and minimalist design was a departure from the rounded edges of the previous iPhone models. The iPhone 4 had a dimension of 115.2 x 58.6 x 9.3 mm and weighed 137 grams. It was available in two colors, black and white. The power button was located on the top edge of the phone, while the volume buttons and the silent switch were on the left side. The headphone jack and the dock connector were located at the bottom of the phone. Display: The iPhone 4 had a 3.5-inch Retina display with a resolution of 640 x 960 pixels. The Retina display was a significant improvement over the previous iPhones, as it had four times the pixel density of the previous models. It had a pixel density of 326 pixels per inch (PPI), which was the highest pixel density of any smartphone at the time. The display used IPS (In-Plane Switching) technology, which provided better color accuracy and wider viewing angles than the previous iPhones. The display was also protected by a layer of scratch-resistant glass with an oleophobic coating that repelled fingerprints and smudges. Camera: The iPhone 4 had a 5-megapixel rear-facing camera with an LED flash. The camera had autofocus, tap-to-focus, and face detection features. It could also capture 720p HD video at 30 frames per second. The camera was a significant improvement over the 3-megapixel camera on the iPhone 3GS and provided much better image quality. The front-facing camera on the iPhone 4 was a VGA camera that could capture photos and record video at 480p resolution. The camera was primarily used for video calling and provided decent quality for the purpose. Performance: The iPhone 4 was powered by Apple's A4 chip, which was a 1 GHz single-core processor. The A4 chip was the same chip that was used in the original iPad, and it provided significant performance improvements over the previous iPhones. The phone had 512 MB of RAM and was available in three storage options: 8 GB, 16 GB, and 32 GB. The iPhone 4 was also the first iPhone to feature a gyroscope, which provided more precise motion sensing than the accelerometer. The gyroscope was used in several games and apps to provide a more immersive experience. Operating System: The iPhone 4 was shipped with iOS 4.0, which was a significant upgrade over the previous iOS versions. iOS 4.0 introduced several new features, including multitasking, folders, FaceTime, and iBooks. The multitasking feature allowed users to switch between apps seamlessly, while the folders feature allowed users to organize their apps into folders. FaceTime was a video calling feature that allowed users to make video calls over Wi-Fi. iBooks was an e-book reader app that allowed users to download and read books on their iPhone. iOS 4.0 was upgradable to iOS 7.1.2, which was the last iOS version that was compatible with the iPhone 4. The iOS 7.1.2 provided several new features, including a redesigned user interface, Control Center, AirDrop, and iTunes Radio. Connectivity: The iPhone 4 supported 2G, 3G, and 4G networks. It had Wi-Fi 802.11 b/g/n, Bluetooth 2.1, GPS with A-GPS, and a 30-pin dock connector. The phone did not support NFC (Near Field Communication) or wireless charging, which were not mainstream technologies at the time. The iPhone 4 also had a built-in accelerometer, a three-axis gyro, and a proximity sensor. The accelerometer provided orientation sensing, while the gyro provided more precise motion sensing. The proximity sensor detected when the phone was held close to the user's face and turned off the display to save battery. Battery Life: The iPhone 4 had a non-removable Li-Po 1420 mAh battery that provided up to 7 hours of talk time on 3G and up to 14 hours of talk time on 2G. The phone had a standby time of up to 300 hours on both 2G and 3G. The battery life was a significant improvement over the previous iPhones, and it was enough to last a full day of moderate usage. Price and Availability: The iPhone 4 was released on June 24, 2010, and it was available in the United States, the United Kingdom, France, Germany, and Japan. The phone was available in three storage options: 8 GB, 16 GB, and 32 GB. The price of the iPhone 4 with a two-year contract in the United States was $199 for the 16 GB version and $299 for the 32 GB version. The unlocked version of the phone was available for $649 for the 16 GB version and $749 for the 32 GB version. Conclusion: The iPhone 4 was a game-changer in the smartphone industry. It introduced several new features and improvements over the previous iPhones, including a new design, Retina display, better camera, and improved performance. The iPhone 4 was also the first iPhone to support multitasking, which was a significant improvement over the previous versions of iOS. The iPhone 4 was available in three storage options: 8 GB, 16 GB, and 32 GB, and it was available in two colors, black and white. The iPhone 4 was a hugely successful phone, and it sold over 1.7 million units in the first three days of its release. The iPhone 4 was a significant milestone in the iPhone series, and it set the stage for the future iPhones to come.
Category Information
Body Dimensions: 115.2 x 58.6 x 9.3 mm
Weight: 137 g
Build: Glass front (Gorilla Glass), glass back, stainless steel frame
SIM: Micro-SIM
Display Type: Retina IPS LCD
Size: 3.5 inches (~54.0% screen-to-body ratio)
Resolution: 640 x 960 pixels (~330 PPI density)
Protection: Scratch-resistant glass, oleophobic coating
Platform OS: iOS 4, upgradable to iOS 7.1.2
Chipset: Apple A4 (45 nm)
CPU: 1.0 GHz Cortex-A8
GPU: PowerVR SGX535
Memory Card slot: No
Internal: 8GB 512MB RAM, 16GB 512MB RAM, 32GB 512MB RAM
Main Camera Single: 5 MP, f/2.8, 1/3.2", AF
Features: LED flash, HDR
Video: 720p@30fps
Selfie Camera Single: VGA, videocalling over Wi-Fi only
Features: No
Video: No
Sound Loudspeaker: Yes
3.5mm jack: Yes
Comms WLAN: Wi-Fi 802.11 b/g/n
Bluetooth: 2.1, A2DP
GPS: Yes, with A-GPS
Radio: No
USB: 2.0, proprietary reversible connector
Features Sensors: Accelerometer, gyro, proximity, compass
Messaging: iMessage, SMS(threaded view), MMS, Email, Push Email
Browser: HTML5 (Safari)
Java: No
- iCloud cloud service
- MP3/WAV player
- MP4/H.264 player
- Document viewer/editor
Battery Type: Non-removable Li-Po 1420 mAh battery
Stand-by: Up to 300 h (2G) / Up to 300 h (3G)
Talk time: Up to 14 h (2G) / Up to 7 h (3G)
Music play: Up to 40 h
Misc Colors: Black, White
Models: A1332, A1349
SAR: 1.17 W/kg (head) 0.87 W/kg (body)
SAR EU: 0.93 W/kg (head) 0.74 W/kg (body)
Price Starting at $199 (with contract)
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