iPhone 4S doesnt have bigger screen or different design the iPhone 4S is certainly a step on from its predecessor, although much of the attention will be focused on just how big that step is.
The Siri personal assistant software is likely to capture the headlines. Although Google is doing great work with its own voice software, but Siri appears to have taken things - for now at least - to a new level.
Apple has improve the camera to a 8 megapixel camera may well convince us to throw away our compact camera and the big improvements in graphics and processor power could lead to some enticing opportunities.
Design
The newly released iPhone 4S remains 4.5” of height and 2.31” of width the dimensions of iPhone 4S remains similar to its predecessor iPhone 4. The thickness of the device is 0.37” as well regardless of the improvement done to the camera. There for, iPhone 4S remains the same portable slim device everyone love. iPhone 4S weighs 140g. The slight increase of device is maybe due to the many new improvements that we will discuss later.
Display
iPhone 4S includes a 3.5” touch screen with 960 x 640 resolution. The screen also includes the usual fingerprint resistant oleophobic coating. The display marketed by Apple as ‘retina display’ has a contrast ratio of 800:1. The device comes with sensors such as an accelerometer sensor for auto-rotate, three-axis gyro sensor, a proximity sensor for auto turn-off and an ambient light sensor.
Siri
The feature that Apple touted most during the event was the new voice assistant called Siri. Siri isn't integrated into everything that the iPhone 4S does, but it does link up with some key features, allowing it to be a significant tool and not a cheap gimmick. Siri is designed to deliver information or follow commands that you give it. For example, you can check the weather, ask for a contact's address, set up a reminder, get directions, and ask for obscure trivia like the height of Mount Everest. You speak with a robotic female voice (you can't change her identity) and access the feature by holding down the Home button.
Engine Room
Its A5 processor, which is either identical or substantially similar to the processor powering the iPad 2 – Apple, as is their wont, didn't say. Schiller claimed that the A5's overall performance was up to two times as fast as the A4 in the iPhone 4, with graphics performance being up to seven times as fast. iPhone 4S only running on 512MB of RAM.
The iPhone 4S features Apple's A5 dual-core 1GHz processor along with a dual-core GPU. Apple says the new chipset will make the iPhone 4S twice as fast and offer graphics performance that is seven times faster than the iPhone 4's.
Battery life
Despite the more powerful processor, the company claims the smartphone will be able to provide 8 hours of talk time over 3G, 14 hours over 2G, 6 hours of browsing over 3G, 9 hours via Wi-Fi, 10 hours of video playback, and 40 hours of music playback.
The promised times are impressive, but manufacturer promises can be just that. Though the Samsung Epic Touch 4G and Motorola Droid Bionic had rated talk times of 8 hours and 10.8 hours, respectively, they actually lasted a less stellar 7 hours each.
Apple's Phil Schiller and his battery stats at Tuesday's 'Let's talk iPhone' event (source: Engadget)
Software
iPhone 4S is loaded with iOS 5 and usual applications one can find on an iPhone, such as FaceTime. The newest addition to the uniquely designed applications on iPhone is ‘Siri’; a voice assistant which can understand certain keywords we speak and virtually do everything on the device. ‘Siri’ is capable of scheduling meetings, checking weather, setting timer, sending & reading messages and etc. While voice search and voice command assisted applications were available in the market ‘Siri’ is quite a unique approach and sounds more user-friendly.
iPhone 4S comes with iCloud as well, enabling users to manage content across multiple devices. iCloud wirelessly pushes files across multiple devices managed together. Applications for iPhone 4 S will be available on Apple App Store; however it will take some time for the number of applications supporting iOS 5 to increase.
Camera
The preciouse iPhone (4) has 5-megapixel camera which was already great, but it's about to get better. The iPhone 4S has an 8-megapixel camera with autofocus, flash, f/2.4 aperture lens, and a backside-illuminated CMOS sensor that allows 73 percent more light than the previous sensor and should deliver better low-light performance.
A hybrid IR filter is also onboard for better color accuracy. According to Apple, the new camera performs 33 percent faster than the iPhone 4's camera, and the A5 processor has a built-in image processor that adds face detection and 26 percent better auto white balance.
Videos got a boost with the ability to shoot 1080p HD video clips at 30 frames per second and with video stabilization. Yet, even with all the improvement.
Connectivity
iPhone 4S is a dual-band world phone, meaning it supports both GSM and CDMA. 4S now supports HSPA+ 14.4, so the smartphone is capable of reaching theoretical download speeds of 14.4Mbps down, 5.8Mbps up.
It's certainly an improvement over the current model, but disappointing that there's no compatibility with the faster HSPA+ 21Mbps networks. 4G support for LTE on Verizon or WiMax on Sprint is troubling. Apple has its reasons, no doubt. Battery life remains an issue for high-speed phones and Apple must have decided that, at this point.
Improvement from iPhone 4
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