iPhone Reviews

Midnight campers, miles long queues and stores with all the stuck wrung out of them; what else sounds like all of that? It can only be a new iPhone. Apple’s launch of the iPhone 4 has witnessed the greatest excitement for a new iPhone ever and this is just a reflection on how successful and exciting its predecessors were. In fact, the iPhone 4 might be Apple’s most successful launch yet, despite some bumps on the road. The proof for this is that, the servers of AT&T and Apple being overloaded for the first day of pre-orders and the shipping date of the next set of phones pushed back due to incredible demand.

In the three years since the first iPhone went on sale, the mobile landscape had changed irrevocably. Most phones in the market now offer apps, internet browsing, social networking widgets and email, while the higher end phones continue to innovate around speed, features and built quality. All this just means that Apple has an increasingly difficult job in its hands; responding to the innovations of the chasing pack while turning out a new handset every year. As you can see, it is really a lot to live up to and Apple’s iPhone 4 is doing its best with the inclusion of features like the super fast A4 CPU, a completely new industrial design, an outrageous retina display, front facing camera and a five mp shooter on the back and with all this, no one will dare to argue that Apple has been sleeping at the wheel. So, now the million dollar (or pound in this case) question is that, whether or not the iPhone 4 can live up to the intense hype. We have answers for every question of yours regarding the iPhone; read on to find out.

Design:

We cannot overstate how high end the design of iPhone 4 is. The 3GS now feels cheap and chubby by comparison, and even a phone like the HTC Driod Incredible, which came out just now, looks like last generation.

An iPhone Makeover:
Perhaps, the most notable change with the new iPhone 4 is the drastic industrial design overhaul. The design engineers have completely rethought its strategy on how the iPhone should look and feel, and the end result is nothing if not striking. Though the iPhone 3G and the 3GS models simply tweaked the design of the original handset, the iPhone 4 marks a sharp departure from those previous models. As you might be aware by now, we were very fond of the look and feel of all the three previous handsets, and we have to only say that the design of the iPhone has got only better. In short, the facia and rear are glass, both the surfaces are flat, and there is a stainless steel border that circles the entire phone. Though some of you picky ones might say that it looks a bit boxy, it also has a clean, svelte and the all important look of Apple. The design aspect that we liked the most, is its flat back, because this means that the phone no longer wobbles while resting on the table. As you might be aware by now, the iPhone 4 can be got in both black and white; here again, the former one is much more preferable.

Glassy:
With so much of glass involved, the iPhone 4 is certainly very shiny and beautiful; but Glass means, there are some concerns too. Though Apple has thoughtfully offered some oleophobic coating on both front and back sides, the glass attracts smudges by a ton. And, even though Apple’s CEO Steve Jobs promises us that the glass does a much better job in resisting scratches and cracks than plastic, we will have to watch for its long term durability. The iPhone 4 has a very sturdy and solid feel and it does survive a few drops to a carpeted floor. But, we do wonder how it will withstand travelling inside a pocket with all your keys and coins. Only time has to say how it holds up to everyday heavy usage.

Dimensions:
With the dimensions of (H x W x D) 4.5 x 2.3 x 0.37 inches, the Apple iPhone 4 is just about as tall as the iPhone 3GS, but is slightly thinner at 25% to be exact and is also narrower when measured across the face. It certainly does feel smaller when compared to its predecessors, but that is not a bad thing. Apple boasts that this is the thinnest smartphone in the market, but since this race changes rapidly everyday, it might not cling on to the title for long. Putting the device on the scales, it comes in at 4.8 ounces, which is exactly back to what we had in the first generation iPhone, as both the iPhone 3G and 3GS were slightly lighter. The extra girth is attributed to the bigger battery and so, we will not be complaining about it; and the difference is barely noticeable.

Retina Display:
Sometimes, the best gift is something that you did not know you actually wanted and that is definitely the case with the iPhone 4’s display. It features what is called as a Retina Display, with a resolution of 960 x 640 pixels (326 pixels per square inch), which is four times the resolution of the previous iPhone models. The new “Retina display”; so named because it surpasses the number of pixels the human retina can process. In addition to this, it makes use of the same IPS screen that is used on the iPad, with a massive contrast ratio of 800:1. Though we have always loved and praised the displays of the current iPhone, Apple needs to give a finishing touch to it with the mind blowing AMOLED screens and TFT displays that we have seen on many Android phones like HTC Evo 4G and that is exactly what it has done.

Though “Dazzling”, “Gorgeous” and “Stunning” are the words we gadget reviewers usually use to describe the high quality and well performing smartphone displays, we are not quite sure if these words will do justice to iPhone 4’s display. Trust us, everything about this display is simply fantastic; bold colours, exotic graphics to the vividly clear text. The display can be seen reasonably well in direct sunlight and the details on the photos, applications, web pages and videos are as sharp as they can ever be. The best thing about the display is that, you cannot see any pixels on the display. This is quite remarkable, especially apparent when you hold it up next to the iPhone 3GS. All this praise does not mean that we believed Apple’s claim that the display exceeds what is perceivable by the human eye, but we must also admit that there is no denying to the fact that it looks amazing.

The iPhone 4 also has the same ambient light sensor, proximity sensor and accelerometer as in the case of the previous iPhones, but there was no change in their functionality.

Other changes:
As we had mentioned earlier, some of the other design changes include the new front facing VGA camera, new LED flash with main camera lens and the inclusion of the new noise cancellation microphone on the top side of the phone. Needless to say, they are all welcome additions as they represent new functionality. We liked the new split volume buttons as they are easier to get a grasp on than the previous volume rocker. Just above the volume controls is the usual mute switch, which has also got a little makeover from Apple. Moving on to the major changes, Apple has moved the SIM card slot to the right spine and has also switched to the Micro SIM format, similar to the iPad; this kind of the Micro-SIM set-up allows for more space for the larger battery. So, all we have to say is, just keep in mind that you will not be able to use a standard SIM in the iPhone 4.

Buttons and Ports:
Most of the remaining exterior elements of the iPhone remain largely unchanged. You will find the Home button at its usual place, below the display and the 3.5mm headset jack and power key sit up top next to the afore mentioned noise cancellation microphone. The other ports, the 30 pin connector, microphone, and speaker are placed on the bottom end of the iPhone 4. Unfortunately, but not surprisingly, you will still not be able to remove the battery.

Antenna:
Most of you might be thinking that the stainless steel border is just a design feature, but it is actually more than just decorative. It actually doubles as two new antennas that circle the entire phone, minus the three small notches. Seriously, Apple’s industrial design team members have are extra-terrestrial, who else can make an antenna look so pretty? The first antenna that runs from the notch on the top of the phone to the one on the left side is for WiFi and Bluetooth. That leaves us with the second antenna, which spans from the top notch down the right side and around to the bottom of the phone, for EDGE and 3G.

Though Apple does not specifically promised that the new antennas will be improvising on the call quality or WiFi reception, their very existence itself is an indirect admission that the data and voice reception have been troublesome and needs to be addressed. Though most of the current iPhone users are blaming their network providers for their connectivity issues, please remember that both the carrier of the network and antenna of the phone play equal roles in reception. However, as we mention below in the performance section, we are still not sure if the new antennas have improvised reception. In fact, have they made it even worse? Read on to find out the answer.

Features:

iPhone 4 is everything that a new piece of technology should be. It is innovative, attractive, and ahead of its competition. In comparison, previous iPhone upgrades seem inconsequential; that is how much iPhone 4 brings to the table. With scores of new features, the iPhone 4 circles around its 3GS predecessor in bringing in the new features. While some of the features are unique to the device, the others come with the iOS 4 update.

Processor and Speed of iPhone 4:
The processor under the hood is the same 1GHz ARM Cortex A8 chip that is found in the iPad. Additionally, though Apple has not specified the RAM, we know that it is 512MB. Just within few minutes of usage, we realised that the phone is quite a bit faster than the 3GS and certainly than the iPhone 3G. Menus, applications, and other features opened in a flash. And as we mentioned earlier, the app switching in the multitasking menu and the camera shutter did not leave us waiting.

Multitasking:
Though we have always been able to multitask with the native features on iPhone like the music player, the option is now available for the third party apps too. The primary access point is a multitasking menu that can be accessed by double tapping on the home button. As soon as you get to the menu, you will see a list of applications that are running at that moment along the bottom of the display that you will be able to scroll through using a sideways finger swipe. This pop-up menu shows only four apps at a time, but you can keep many more of them in the tray. Apple has made the multitasking menu so easy. To open a running app, just scroll through the menu and tap over its icon once. And, when you are ready to end the app, first do a long press on the particular icon and tap over the tiny delete icon on the top left corner. Switching between the apps is a relatively simple task as well; as you move back and forth, you will get back to the exact point that you left. There is also a clear sense of organisation, with the most recently used app on the left side. The aweinspiring Apple experience!

As you might be aware, multitasking of Apple works a little different than on the other smartphones. Instead of having all device resources available to every running app, iOS 4 allows only seven app services to run in the background. According to Apple, this arrangement will have less of a drain on resources like battery life and memory than if it gave developers free rein. Additionally, since background apps essentially pause, it will free the system from having to juggle resources and kill stalled applications. So, here is what you will be able to do in the background. Seven of Apple’s approved processes include audio, VoIp services such as Skype, GPS location of apps such as TomTom, push notifications and local notifications, task completion and fast app switching. Local notifications are the apps that do not have to go through a server and fast app switching is possible as the apps essentially hibernate not to use the CPU. With the task completion feature, an app will finish something it is already started even if you send it to the background; it will send you an alert when it is done. Fast app switching, on the other hand, is the app hibernation process that allows you to toggle back and forth quickly and return to the same place you left.

Though some have complained about the built-in limitations, which mean that iOS 4 does not possess “real” multitasking, we think “incomplete” will be a better description. We accept the fact that you cannot run everything in the background; for instance, your Twitter feed, will not update while paused, but iOS 4 allows you to run certain features from multiple apps simultaneously. If that does not sound like multitasking, then we do not know what is. And, this would not be the first time Apple limited the set of features or takes longer with development in order to produce the most desired customer experience. You may not agree with such a philosophy, but Apple has always been honest about pursuing it. Like so many things in technology, it just comes down to what works best for you.

Even though multi-tasking came in after a long wait, we were really pleased with the whole experience. Because, everything needs to have a way of doing and Apple has presented the feature in a slick, easy-to-use manner. Its performance was simply inspiring and it did so without ever crashing or freezing the phone at any point. It did not affect the battery life in a negative way and it totally accomplishes what it sets out do. But even with all these strong points, we would not conclude that it is the Best way to multitask. Though Apple’s Multi touch is slick and save you a few clicks, but there are these other approaches like the “deck of cards” interface on WebOS that continues to impress us. A biggest advantage though will be the fact that limited multitasking results in more-efficient power management.

Home Screen Folders:
Though we love apps as much as the next person, we have become really tired of scrolling through several pages of iPhone home screens. Fortunately, that has changed with the addition of home screen folders. And this is yet another feature that the competing devices have long offered, so it is soothing to see Apple stepping up. To start with, use a long press on the home screen so the icons “jiggle”, just the way it did in the iPhone 3 and 3GS. You can then take an app and drop it on top of another to create a folder. The folder then appears as a square with tiny icons of the included app inside. Tap the folder to access the included apps and get an expanded view of the folder’s contents. Alternatively, if you want to remove an app, just drag it back to the home screen. It is good news that you are presented with a fair amount of flexibility for folder organisation. You are allowed to add as many folders as you like, change the default folder name, and add both related and unrelated apps. However, you are limited to twelve apps per folder. This not only applies to the third party apps, you can group legacy features like the Weather and Stock applications into a single folder. The overall process has been easier; we would not say it offers a huge change from the equivalent experience on Android.

Mailing:
It is a well known fact that iPhone has always been a very functional email machine, if not as efficient as the Blackberry, it came very close. But, we seldom enjoyed switching back and forth among multiple accounts to read new messages. Here comes the good news, the Apple iPhone 4 has a new unified in-box that is accessible under the “Mail” option on your home screen. A new option called “All Inboxes” has been listed above your individual in-boxes, and you will still be able to delete and move messages. In this case too, it seems to work well, but it is not vastly superior to how competing OSes handle the same process.
Some of the other e-mail changes include the capability to add multiple Exchange accounts, organize e-mails by thread, jump directly to individual in-boxes, resize photos before you send, and open attachments with a preferred app. Each and every feature is doing a good job, but here, we will discuss a couple of them in detail. E-mails in a thread will now be designated by a small number on the left side of the message header. Clicking the number will take you to a separate screen that lists all relevant messages. It is really a nice touch, and we like that you can move or delete messages in the thread. We also like the new option to delete e-mails directly from search results. For the corporate people, Apple has provided with options like enhanced data protection, mobile device management, wireless app distribution, support for Exchange 2010 and SSL VPN.

Home screen customisation:
Home screen customisation was not a feature that we expected Apple to include in this model and it was in the bottom part of our wish list. Surprisingly, the company has done a very decent job in rolling out the feature out there. It is true that you have always been able to change the standard black background using the third party apps, the iOS4 does add the native capability to the iPhone and iPod Touch. In the iPhone 4, you can find the “wallpaper” option in the Settings Menu and then choose either the wallpaper that is already available or even a picture on your camera roll. After a selection is made, you get the option to set it as the wallpaper for your home screen or the lock screen, or both. Though all of this sounds to be straight forward, there are some black spots too. First of all, remember that once you manage to ditch the standard black background, there is no way to get it back. You can only take a photo of the black wall, the night sky or a dark room, but it is hardly the same thing. As time has passed by, Apple has replaced some of the native wallpapers with new options.

Auto Correct Feature:
The iPhone has always had an auto-correct feature, that changes the words as you type; and thought they were useful to some extent, there was something incomplete about it. That is exactly why we have become fans of the latest spell check feature that notifies you of unrecognised or misspelled words with a red underline. The Spell Check feature works well when you are composing both emails and text messages, and you will also get a list of some suggested corrections. You would certainly like to have more selections, but that is quite a small issue.

Search Options:
The iOS 4 are offering few search options across various features. When you are typing a URL in the Safari browser, you will not only be getting the URL titles of the sites that you have visited recently, but also the complete web addresses. This is a very nice touch, as it will allow you to find the exact website that you want. In the Universal Search option, you will be getting Web and Wikipedia results, along with the content stored on the phone. It just takes a couple of clicks to get them going and is very convenient too. Finally, there is also a search bar for your text messages which works just like the search option for e-mails.

Game Center:
Game Center is a feature that comes later this year, which will include features like a social gaming network, the ability to invite friends to games, leader boards and achievements, and the opportunity for “matchmaking” which sets up two people to play.

Connectivity:
Apple iOS 4 has added persistent WiFi, which allows the iPhone 4 to stay connected to the hot spot even when it is in the stand-by mode. But, this could result in adverse negative effect on battery, so, we will be watching. With the availability of wake on wireless, the handset promises to wake from standby when it comes in range of a cellular network. This is not something that we were asking for, but having included, we are happy to take it. Now, there is also support for using a Bluetooth keyboard. We were able to successfully pair and used an Apple Bluetooth keyboard without any issues.

Miscellaneous changes:
As in the case of previous updates, iOS 4 also brings a selection of smaller features and interface tweaks. And these updates include a redesigned calculator icon with the same feature, the ability to send apps as gifts, alphanumeric pass codes, bigger font sizes for accessibility, enhanced iPod-out capability, and a redesigned location icon in the Google Maps application. You are also getting a new Birthday Calendar that is accessible under the main calendar app; but, we are still looking for a specific birthday event field.

Multimedia:
With the iPhone 4 too, Apple just strengthens the fact that it is the king of mobile music and video and this is one area the company beats its competitors hands down. Most parts of the new iPhone’s iPod Player remains unchanged, but we are really glad to see a few new offerings. The phone is now equipped with convenient option for creating playlists on the go. You will be able to do so in just a couple of steps and add a selection of tunes. What is more? Consumers will always welcome features when it allows you to do something without going through iTunes. Back in the multitasking menu, you will find new music player controls and a shortcut for locking the display rotation.

Apple iPhone 4 Camera:
Though Apple’s iPhone’s camera has always been decent, it lacked features found on many basic phones. And hence, the new camera with 5-megapixel resolution, the new LED flash, and the 5x digital zoom needs to be applauded. The phone is also equipped with a new backside illuminated sensor, which requires a more-detailed explanation. The biggest advantage of this feature however is its ability to record 720p high-definition video at a constant 30 frames per second. Though iPhone 4 is not the first handset to offer this capability, it delivers better on quality. Of course, we would love more options like a brightness control and colour tones, but we doubt that we will get them anytime soon.

The primary camera interface is about the same as the 3GS, with the usual shutter control, camera/camcorder switch, and photo gallery shortcut off to one side. A new flash control activates the LED on the rear face. Thankfully, you can choose from auto or “always-on” modes. In the opposite corner is a control for switching between the front and rear cameras. When you are not making FaceTime calls, you can even use the front-facing VGA camera for self-portraits. Now, we have to admit that the Image quality will not amaze, but that is not even surprising, given that VGA shooters are hardly the pinnacle of technological development. However, it is great to be able to take vanity shots.

The camera has also incorporated the changes that came from iOS 4. One of our favourite features is a 5x zoom for the still camera. While taking the photo, just tap over the display to view the zoom bar. You can make use of your finger to pan in and out, but remember that since this is digital zoom, picture quality will degrade as you zoom in. Now you also get to use the tap-to-focus feature in the still and video cameras. Though, we have never found that this feature makes that much of a difference, but it certainly does not hurt to have it.

In our tests for camera quality, we found that the camera quality has improved noticeably. Starting with the still photos, it will not be exaggeration if we said that the iPhone 4 takes some beautiful photos. The colours are bright and natural and there is no visible image noise; the shots were in focus. The bright flash has also made a positive change. As in the case of most LEDs it can make dark images look a tad overblown, but we are just glad that we can now take images in a dark room. We were also surprised to find no shutter lag like there was with previous iPhones. The camera takes the shot the instant you press the shutter. The video quality is also very impressive. All that you have to do is, keep the phone steady and you will find that you clips are just smooth and free of any pixels or hiccups. The camera also handles motion quite well, and audio is in sync with the video. You are also offered with an option to cut your videos using the nifty video-editing feature that originated on the iPhone 3GS.

In the photo gallery, you can organise all images from an event or those that feature a specific friend. However, for both of these features, you will need to have already used the face-recognition options in iPhoto or Aperture and sync with iTunes. One option that seems to have disappeared: in the initial beta version of iOS 4, there was an option in the gallery for rotating photos, but we were not able to find it again in the final version.

Face Time:
Apple boasts Face Time as one of the iPhone 4’s most-exciting features and it certainly looked good at the demo, so we are quite eager to try it. The quality of the feature is very pleasing and it is good that it is an integrated option that does not require an app. While the incoming video mostly depends on its quality on the senders side, and it will be pixelated and jerky, particularly when your friend is using the front camera, but you cannot do much about it. And that is actually expected when using a VGA camera. The video from your phone will show in the top left corner and it looks great from either camera. Additionally, you can use it in both portrait and landscape modes. Obviously, the Face Time features works only with another iPhone 4. The feature can be activated by placing a call on a Wi-Fi network and once the call connects, you will see an option for FaceTime instead of the normal “Hold” control; we have no idea where that option went. Note that both you and your friend must press the control to establish a video chat; you then can mute the call or end it directly from the FaceTime screen. After a FaceTime call is placed for the first time, you will see the phone number listed twice in your recent calls list. While one entry activates FaceTime directly, the other will place a normal cellular call.

This is not to say that the FaceTime was not without any issues. On more than one occasion, we were not able establish a connection, even on using two iPhone 4s on Wi-Fi. We even found on one handset that the FaceTime option was not there when it should have been. The switch between normal and FaceTime calls can take a few seconds, during which reception is faulty. For 2010, the FaceTime feature. There has been a lot of grumbling about this restriction, but we do not think that is a bad thing. Video chat uses a ton of data so we are sure the experience would be better on Wi-Fi than on any other network. What is also great is that because you are on Wi-Fi, FaceTime calls will not deduct from your cellular minutes. As long as Apple kills the Wi-Fi limit in the next year, we will be happy.

As fun as it sounds, the iPhone 4’s FaceTime feature is not that of an essential one. After all, video chat technology has been around since 2004 and the technology has not been a huge hit. Yet, Apple has a talent for repackaging existing features and attracting wide consumer interest.

Gyroscope:
In the iPhone 3GS, Apple has given us a compass, but the iPhone 4 raises the bar by offering a three-axis gyroscope. Like on an airplane, you will get pitch, roll, and yaw, and it is tied with the accelerometer to provide six-axis motion sensing. This is a fun app for the game developers and you will enjoy it too.

Tethering:
The iPhone has always been capable of tethering, but there had been some network issues about it. A few networks now offer the ability to use your iPhone as a modem for your PC. However, you will have to pay some extra to get it, but at east it is there.

iMovie and iBookstore:
The iMovie feature brings movie-editing capabilities to the iPhone. You have to pay a couple of pounds for the app, but it is a nice touch. Given just how much processing power is required to edit video, iMovie’s performance was impressive. It felt very smooth. Trimming a clip is a simple as tapping on it and dragging a pin right or left. Now you can shoot your kid’s dance recital, edit it together, and ship it out to friends and relatives before the dance teacher has finished the class.

E-book reader of Apple has joined hands with Amazon’s Kindle app as a gift for the bookworms. You will be able to access Apple’s iBookstore to purchase new content, and if you have an iPhone and an iPad, you can read your book on both devices with just one purchase and even sync your current page. iBooks on the iPhone 4 takes great advantage of the new phone’s high-resolution screen. Text is amazingly crisp. When we tried to flip over into PDF view, we did notice that there were some pauses when zooming in to a large PDF document. But once the zoomed-in portions of the PDF appeared, they were immaculately rendered. iBooks also gains a few new features previously unavailable on the iPad. You can now create notes and bookmarks, and see those notes, bookmarks, and highlights in the table of contents. We suspect that the notes remain trapped in line - for example, there’s no way to create cheat sheets, summaries, or other such personalized shortcuts that you could then utilize on your computer or elsewhere - but these new functions are a step in the right direction.

Call Quality:

Call quality has always been an issue with the iPhone, and unfortunately, Apple has done it again with the iPhone 4. There is even a chance that the antenna could be doing harm. . Granted, keeping your fingers away from a cell phone antenna is advisable for the best reception, and Apple is hardly the first manufacturer to offer such advice. We see such warnings commonly on handsets that have a bottom-facing antenna, but users typically do not hold such a device with their palm or fingers resting in that area. So, as you can sense, we are not happy with the reception. But, on the other end, callers reported that the call quality is excellent and they did not know we were on a cell phone. During active calls, they could hear us without any problems and they mentioned less background noise than when we used the 3GS.

Speakerphone calls were mostly satisfactory. We could hear our friends clearly, though the volume was a tad distorted at the highest levels. Bluetooth headset performance was mixed. Bluetooth headset calls were fine, but we had mixed issued with stereo Bluetooth headsets.

Battery:

The iPhone 4’s bigger battery means more juice to get you through the day. Apple officially promises 14 hours of EDGE talk time, 7 hours of 3G talk time, 40 hours of audio playback, 10 hours of video playback, 6 hours of 3G browsing, 10 hours of Wi-Fi browsing, and 300 hours of standby. The battery lasted a respectable period. We used it heavily for about 5 hours and we were still going relatively strong after a full charge.

iPhone 4 Package contents:

Inside the box, Apple has included the usual accessories, like the small wall plug, a USB 30 pin connector cable, and the standard white Apple ear-buds. And oddly, god alone knows why, you do not get the SIM removal tool that was available with the previous models. So, you have to look for a paper clip to do the job for you, and we were truly miffed that we did not get it. Apple has not given any explanation for this.

Verdict:

The iPhone4 appears to be a must-have for anyone with an original iPhone or iPhone 3G; while the former will not get the iOS 4 upgrade at all, while the 3G will not support some features. And people who have an iPhone 3GS will find this a worthy upgrade, too. Unlike the previous jump, from the iPhone 3G to the 3GS which focused on slight performance improvements, the Apple iPhone 4 bolsters the hardware’s digital imaging capabilities and its display, making it a comprehensive and measurable upgrade over its predecessor.

Apple iPhone 4 Technical Specification Details

Manufacturer	Apple
Model Name	iPhone 4
Dimensions (H x W x D)	115.5 x 58.6 x 9.3 mm
Weight	137 grams
Memory capacity	16GB or 32GB flash drive
Colour	Black or white
Display technology	Retina Widescreen Multi-Touch display
Display size	3.5-inch
Resolution	960-by-640-pixel resolution at 326 ppi
Contrast ratio	800:1 contrast ratio (typical)
Brightness	500 cd/m2 max brightness (typical)
Display features	Fingerprint-resistant oleophobic coating Support for display of multiple languages and characters simultaneously
Mobile and wireless	UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) 802.11b/g/n Wi-Fi (802.11n 2.4GHz only) Bluetooth 2.1 + EDR wireless technology
Phone features
Audio formats supported	AAC, Protected AAC, MP3, MP3 VBR, Audible (formats 2, 3 and 4), Apple Lossless, AIFF and WAV
Operating system	Apple iOS 4
Software included	iTunes 9.2 or later
Mail attachment support	Yes
Camera features	Video recording, HD (720p) up to 30 frames per second with audio 5-megapixel still camera VGA-quality photos and video at up to 30 frames per second with the front camera Tap to focus video or still images LED flash Photo and video geo tagging
Sensors	Three-axis gyro Accelerometer Proximity sensor Ambient light sensor
Head phone features	Apple Earphones with Remote and Mic Volume control
Package contents	iPhone 4 Apple Earphones with Remote and Mic Dock Connector to USB Cable USB Power Adapter Documentation
Battery	Built-in rechargeable lithium-ion battery
Battery life	14 hours of EDGE talk time 7 hours of 3G talk time 40 hours of audio playback 10 hours of video playback 6 hours of 3G browsing 10 hours of Wi-Fi browsing 300 hours of standby
Warranty	One year