What is iPhone 4S

iPhone 4S is a touchscreen-based smartphone developed by Apple Inc. It is the fifth generation of the iPhone, succeeding the iPhone 4, and was announced on October 4, 2011. It became available for pre-order on October 7, 2011 in seven initial countries (United States, Canada, Australia, United Kingdom, France, Germany and Japan) with the first delivery date set for October 14, 2011, and available on that same day for direct in-store sales in those countries. It was released in 22 more countries, including Ireland, Mexico, and Singapore, on October 28.

The phone retains the exterior design of its predecessor, but hosts improved hardware specifications and software updates. It added a voice recognition system known as Siri from which the "4S" designator came, and a cloud storage service named iCloud. Some of the device's functions may be voice-controlled through Siri. The phone is available for 100 cell service carriers in 70 countries, including eight carriers in the United States.For US customers, unlocked (contract-free) sales started on November 11, 2011. The Associated Press said that AT&T described early iPhone 4S demand as "extraordinary".Reception to the iPhone 4S was generally favorable. Reviewers noted Siri, the new camera, and processing speeds as significant advantages over the prior model. Four million units of the iPhone 4S were sold in the first three days of release






The iPhone 4S looks exactly like the iPhone 4. Aside from the "4S" label on the back, you won't notice a difference.

What kind of processor does it have?

The new chipset is the iPhone 4S' biggest star (like on the iPhone 3GS, the "S" in iPhone 4S stands for "speed"). The handset 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 will offer graphics performance that is seven times faster than the iPhone 4's.
Indeed, there is a noticeable change for the better. Applications across the phone opened quicker--sometimes by up to 3 seconds--and switching between apps using the multitasking feature was smoother. In additional testing, Senior Editor Eric Franklin found just how much faster the iPhone 4S is over its predecessor. On a similar note, Senior Associate Editor Jason Parker found that for some games the iPhone 4S' graphics are far richer. For more on the iPhone 4S gaming experience
Apple used its own dual-core A5 processor in the iPhone 4S. It's the same processor that powers the iPad 2 and provides better graphics and speed.


What's new with the camera?
 

The iPhone 4's 5-megapixel camera was already great--especially when you add a third party app--but the iPhone 4S' is significantly better. The 8-megapixel camera offers 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. Apple also claims 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.
Apple greatly improved the camera in the iPhone 4S. It will shoot photos at 8 MP and take full 1080p HD video.





What is this Siri

Siri is the new voice-controlled feature that lets you do everything from checking the weather to booking movie tickets, just by talking to your phone. You can also dictate text from the keyboard. Siri will only be available on the iPhone 4S.


Will it be 4G?

Well, that depends on your definition of "4G."
The iPhone 4S will run on HSPA networks, a technology that is a bit faster than the 3G connection you're used to. Apple claimed the iPhone 4S can achieve speeds of 14.4 Mbps. That's hardly realistic. We've tested other HSPA phones, and carriers like AT&T average around 4 Mbps in NYC.

Also, AT&T will be the only U.S. carrier that can give you those faster speeds for now.



iPhone 4S adds features that competing smartphones introduced months ago. But that misses the point. It doesn't have everything, but Apple's attention to the user experience remains unmatched. Some consider that focus a worthy trade-off for a regulated and locked-down device, while others prefer more control.

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