Apple's latest iPhone doesn't look all that different on the surface from the iPhone 4 it replaces. But the iPhone 4S unveiled by Apple at a press event yesterday promises an improved processor, new wireless system, and more powerful camera, along with voice control capabilities.
The iPhone 4S is available in black and white, and will be released on October 14 in the UK, US, Canada, Australia, France, Germany, and Japan, on AT&T, Verizon, and newcomer Sprint. The iPhone 4S will be available in more than 70 countries by the end of the year, Apple says.
In unveiling the new iPhone, Apple senior vice president of worldwide product marketing Phil Schiller said that the iPhone 4S keeps the same Retina display, glass on front and back, and stainless steel band. Inside, however, it's all new: The iPad's A5 chip is now inside the iPhone - that's the Apple-designed, dual-core chip.
The iPhone 4S keeps the same Retina display, glass on front and back, and stainless steel band. Inside, however, it's all new: The iPad's A5 chip is now inside the iPhone - that's the Apple-designed, dual-core chip. Schiller says it offers graphics performance up to seven times faster than the iPhone 4, and CPU performance up to twice as fast. Schiller said that with the new internals in the iPhone 4S, "you really see it scream... in games."
The improved performance in the iPhone 4S doesn't come at the expense of battery life. Schiller said that for the first time on an iPhone, you can expect eight hours of talk time on 3G, 14 hours of 2G talk time, six hours of 3G browsing, nine hours of Wi-Fi, ten hours of video, and 40 hours of listening to music.
New wireless system
The iPhone 4S also sports a new wireless system. Schiller said that the phone can "intelligently switch between two antennas to transmit and receive," and the technology works even when you're on a call. The result? Better call quality, and faster download speeds.
The iPhone 4 could support 5.8Mbps up and 14.Mbps download speeds; the iPhone 4S offers 5.8Mbps uploads with 14.4Mbps download speeds. Schiller said that competitors describe those speeds as 4G, but that Apple is "not going to get into a debate about what's 4G and what isn't. The iPhone 4 came in GSM and CDMA models; the iPhone 4S comes in a single model that works around the world on both types of networks.
The iPhone 4S's camera system gets a significant upgrade over the iPhone 4's, too, according to Apple. Schiller said that Apple "set out to create an all new camera," with the aim of challenging point-and-shoots. The iPhone 4S's camera offers an eight megapixel sensor, with 3264x2448 resolution. Said Schiller, "You can print out an 8x10 glossy photo that's pixel perfect." The iPhone 4S's rear camera offers 60% more pixels than iPhone 4's camera sensor. The new sensor is a state of the art CMOS backside illumination sensor, which affords 73% more light per pixel, which Schiller says means richer colors and better lowlight performance. The camera also takes pictures 33% faster than the iPhone 4.
In addition, the iPhone 4S camera sports a Hybrid IR filter on top of the sensor for better color accuracy, which Schiller said is usually a feature you'd associate with DSLR cameras. The optics employ a five-element, Apple-designed lens, which Schiller said is 30% sharper with an f/2.4 aperture. The iPhone 4S's A5 chip also includes an Apple-designed image signal processor, which Schiller said provides advanced face detection - with the ability to detect up to 10 unique faces in a single photo, for automatic exposure. The camera also offers 26 percent improved automatic white balance over the iPhone 4.
Schiller emphasised the iPhone 4S's virtual shutter speed. He compared the iPhone 4S to the Droid Bionic, which needs 3.7 seconds to take its first photo, and the Galaxy SII HTC Sensation, which needs two seconds. The iPhone 4S can take its first picture in 1.1 seconds, and just half a second longer to take a second picture.
The iPhone 4S's camera also takes stunning high definition 1080p video, Schiller said. The phone's image signal processor offers real-time video image stabilisation, along with temporal noise reduction to improve video quality in real time.
But according to Schiller, the "best feature of the iPhone 4S is all about our voice. Schiller explained that, for decades, technologists have attempted to get voice control working right, but none have succeeded. The iPhone 4S changes that. Schiller brought back out Apple's vice president for iOS software, Scott Forstall, to talk about it.
The feature is called Siri, based on the voice-activated app that Apple bought in 2010. Forstall described it as "your intelligent assistant that helps you get things done just by asking." Forstall asked the iPhone 4S what the weather is like today, and the phone gets to the meaning behind his words, displaying a weather forecast. He asked "What time is it in Paris," an it came back with a live clock. "Wake me up at 6am" instantly set an alarm clock for early tomorrow morning.
Apple also partnered with Yelp, so you can say, "Find me a great Greek restaurant in Palo Alto," and the phone lists five restaurants there, sorted by Yelp rankings. Forstall also demonstrated with questions like, "Give me directions to the Hoover Tower."
And Siri doesn't just listen - it also speaks. You can ask Siri to read your messages from the Notification queue to you hands-free, so that you're not glancing at your phone when you should be, say, driving the car. You can even use Siri to reply to messages, Forstall said. If need be, you can tell Siri to check your calendar and then schedule a meeting.
Siri's power, Forstall explained, is in how well it can process natural language. If you say, "Remind me to call my wife when I leave work," Siri knows which of your contacts is your wife, knows the geolocation of your job, and schedules a location aware reminder in iOS 5's Reminders app. Another example Forstall offered was Web searches: "Search Wikipedia for Neil Armstrong."
Forstall said that Siri supports Wikipedia and Wolfram Alpha, and can provide dictionary definitions and currency conversations. And using a Wolfram Alpha feature as an example, Forstall asked Siri: "How many days are there until Christmas?" he asked the phone. It answered, accurately 82. (So you have time to buy your loved ones iPhone 4S models of their own.)
You can tap and hold Siri's "i" button to see a list of all the commands it can understand. It can play songs, genres, messages, manage your calendar, schedule reminders, get directions, email people, provide weather and stock updates, set alarms and timers, search your contacts and notes, search the Web, Wikipedia, and Wolfram Alpha.
Forstall ended the Siri demonstration asking it, "Who are you?" Siri replied: "I am a humble personal assistant."
Schiller added that Siri also supports transcription: Anywhere you see a keyboard in iOS, you can tap a microphone button. Start talking, and your iPhone transcribes what you say. Transcription requires Wi-Fi and 3G; it's built into iPhone 4S, and works in English, French, and German. Schiller said that the feature will debut in beta mode, meaning that Apple will add more languages and services over time.
To trigger Siri, you press and hold on the Home button, the same way Voice Control works on older iPhones today.
Schiller announced that the iPhone 4S will, like the iPad 2, offer AirPlay mirroring, which lets everything on your screen get streamed wireless to the Apple TV. Don't have an Apple TV? You can use an HDMI cable to mirror over the wire, too.