What Really Makes The Apple iPhone 4 Exciting?

iPhone 4 Photo Gallery_1

iPhone 4 Photo Gallery_1

The iPhone 4 is certainly much more than I expected it to be. I was hopeful of an even higher resolution screen than we got. But other than that I was simply anticipating what most other people were expecting. Smaller, faster, neater, video calls, and a stills camera with flash.

That is not to say that video calls, or a 5MP camera – with LED flash – are not good things. But they were kind of a given, and to be expected on any current generation smart phone. So getting excited about those features takes a little more effort. That’s all.

So where did the iPhone 4 really “Wow” me?

Well a fairly full featured version of iMovie available for the iPhone in the App Store at launch, and 720p recording was a pleasant surprise. Plus it’s Apple, so we know that it will “just work” beautifully too. So when these features are simply demoed on stage we can relax safe in the knowledge that the final product we get later this month will do all that it is advertised as doing. But even then, Nokia had video editing on their N series phones a while back I seem to remember.
I am also glad that Apple refrained from calling the iPhone 4, “iPhone HD”. It’s not HD. The screen resolution is not high enough, even if the phone itself records in half-way HD. And HD would have caused a lot of confusion with iPad app names – as I have often suggested to deaf ears. I have to admit to a little bit of smug satisfaction watching most of my fellow industry pundits call it that over the last few months, whereas I refrained, except where chastised by my editor for “SEO reasons”. Whatever that means!?! šŸ˜‰

But I still haven’t said what really blew me away about the iPhone 4 yet, have I? No! Sorry! Ok.. In order of no particular importanceā€¦

The iPhone 4’s screen construction.

It was common knowledge a fair while before launch that the iPhone 4 would feature a more traditional LCD panel, rather than an OLED one. This was a sensible choice from Apple, as OLED has been shown on various Android devices to deliver fairly lacklustre results so far. OLED has certainly not been shown yet, in smartphone form, to be able to deliver the crispness or quality we expect of Apple gear.

What Apple have also done is incorporate a hybrid of IPS and FFS technologies into the 960×640 LCD panel in the iPhone 4. Those technologies are specifically suited to a versatile range of viewing angles, and clarity of view specifically for text heavy applications. Think eBooks, PDFs and web pages. Games, and pictures always look good with a bright, well balanced display – which high quality LCDs produce better than OLED currently also. So Apple worked on what it was important for them to work on. Which is what makes them market leaders after all.

But that’s still not what is really cool about the screen. Their choices so far are what we’d expect from Apple. In other words, the best possible implementation of stable and current technology, rather than new “bleeding-edge” technology just for the sake of it.

What is really cool though is that Apple have reengineered how they make their screens. In doing so they have made it so that there is literally no space between the touch layer and the LCD itself.

Engineering. This is where Apple consistently outshine other OEMs. Their new method of making their composite touch / LCD panels, coupled with the beautiful glass front panel of the iPhone 4 puts our fingers literally on top of the LCD itself. When you look at the new iPhone the screen literally looks like a bright shiny sticker stuck on the outside of the iPhone. It is truly incredible. When you see one in the flesh, that alone will make you want one. I guarantee it. And my name is not Steve Jobs!

The Stainless Steel Case

Stainless Steel has several properties that the Aluminium cases that Apple has favoured to date, do not. It conducts radio waves very well, and it has a heft to it that feels more solid and satisfying. It’s also far stronger.

By combining a practical quality of Stainless Steel, with an aesthetic quality they have produced both a high quality / high performance arial framework for all the various radio signals the iPhone 4 produces, coupled with a healthy feeling heft, and strong construction to the entire device. The iPhone 4 is solid, and receives and transmits strong signals.

Apple have gone one step further still by making the edges of the device square, rather then rounded like previous iPhones, so that it genuinely feels more like a camera when you turn it on its side to use it as one. Again, when you get your hands on one in an Apple Store, or when you steal your friend’s iPhone 4 for a few precious moments you’ll see what I mean.


This is not an obvious feature of the iPhone 4. But what Apple have done is start to refine their iPhone / iPod Touch and iPad OS into one Operating System : iOS.

Part of the reason for this is to bring the various screen sizes that we will inevitably have more of in future, and have now on current devices, under the control of the OS.

For games it is not such an issue. Games makers can just scale graphics to fit the screen, and choose to have, or not have, various levels of detail for textures and other images. But for applications, which is after all what Apple is more interested in, and has to put more work into supporting visually, different screen resolutions is an important issue. And potentially a problem.

Imagine if the 200,000+ apps in the App Store today all had to be re-written for the new iPhone? Developers would not be happy. Apple has addressed this issue with various technologies in iOS (previously iPhone OS 4.0), and will continue to do so moving forward. Currently it is in an early form, but has already improved on the crude 2X feature of iPhone OS 3.2, which is currently found on the iPad for using existing iPhone apps.

Whilst not completely realising their final goal Apple have, in my opinion, taken an important first step towards Resolution Independence in iOS. The best is yet to come. But this is a solid foundation to build from.
iPhone 4, and iOS is where it starts to come together.

The Gyroscope

Steve actually demonstrated the iPhone 4’s gyroscope with a game of Jenga. I found that quite amusing. Apple have not been great at promoting games as a medium in the past. Even with their new found romance with games on the iPod Touch, iPhone and iPad they are still not taken seriously on Apple’s desktop lineup.

Ironically though I don’t think the gyro will find its greatest success in games. There are still a lot of iPods and iPhones, and brand new iPads out there that don’t have this feature. And for a while, at least, games writers will have to ensure their games work with the older Accelerometers found in earlier devices.

Some forward thinking developers will have a gyroscope option in their games. But important aspects of game play won’t be able to rely on the increase in accuracy and freedom of movement that the new component undoubtably bringsā€¦ for the immediate future anyway. Otherwise the game will suffer on older devices, and the core market at the moment.

Where I think the gyroscope will be amazing is in Augmented Reality applications. At the moment looking around and using the camera in an existing iPhone to view our environment and overlay information and advertising on the world around us is a popular gimmick in “AR” apps. But the view is clunky and a bit jittery in most mobile devices (including current iPhones) because of the lack of precision that accelerometers offer. With a gyroscope on the new iPhone 4 Augmented Reality is set to go mainstream. This will be helped by the increased speed of the A4 processor, and the increased accuracy of the gyroscope.

Expect a lot of iAd enabled gyroscope using Augmented Reality apps to hit the App Store very soon.

As a little bit of background for you. The last gyroscope I programmed for was a component that was used in guided missiles originally. Our use for it was entirely different. But that is the kind of precision, and freedom of movement that gyroscope technology is derived from. Think about that for a minute. Your iPhone 4 will be distantly related to a guided missile! Cool eh!

Finally, a quick note about the 5MP camera in the iPhone 4

Apple could have played the numbers game here. They could have gone for 8 or 16 MP unit. And some Android owners may well quote the 8MP pixel camera in the new HTC EVO 4G to backup that line of thinking. But in reality until you make your lenses and your CCD (the device that receives the image inside your phone) bigger and of better quality there is no point. With the current form factor of all smart phones, their lenses and CCDs, more Megapixels just equate to bigger pictures, with more noise, which take up more space on your Flash Memory. Pictures which overall are of the same quality by and large – just noisier.

5 – 6 Megapixels is the optimum size for consumer cameras of the kind of lens dimension we are seeing on these phones. Any more is simply there for bragging rights for the OEM, and offers no functional advantage. Period.

What Apple have done, again, is focus on making the entire package better. Apple’s CCD in the iPhone 4 is designed to get more photons, more accurately, with less noise into your iPhone’s storage. In the iPhone 4’s case they do it by using Backside illumination :

Wikipedia explains Backside illumination this way :

In a device with backside illumination, the silicon light sensor for each pixel is on the ā€œbackā€ side of the silicon wafer, opposite the transistors and metal wiring layers. This increases the efficiency of the sensor as compared to the traditional (ā€œfrontside illuminationā€) technology, in which some of the light is scattered by the circuit layers on the front side of the wafer before it can reach the image sensor.

Here is a good example which illuminates the point I am making about megapixel count perfectly :

Joe Holmesā€™ limited-edition 13 x 19ā€³ prints of his American Museum of Natural History series sell at Manhattanā€™s Jen Bekman Gallery for $650 each. Theyā€™re made on a 6MP D70.

No the iPhone 4’s lens is certainly not up to the standard of one found in a Nikon D70. Not is the one found in the HTC EVO 4G, or any other smart phone for that matter. But they have CCDs of roughly the same quality. The iPhone 4 has one which is better suited than all of them to low light conditions, and getting the best performance possible out of its surrounding hardware.

So there you have it. Those are the things about the iPhone 4 that excite me! What is your favourite feature of the new iPhone 4? Let us know in the comments.


6 Comments on “What Really Makes The Apple iPhone 4 Exciting?”

  1. Flyboy

    Ummm I think its probably you who is not credible…how can you state with such confidence that it will “drop calls like the 3g and 3gs”? You haven't used the phone to know that – you assume. Also, I've never had a dropped call on my 3G – maybe its just the signal in your area. – Nothing has changed in the OS? What are you talking about – it has some of the most significant changes since the original iPhone. If you don't like Apple's products / are jealous / work for Google – then say so and stop posting stupid comments.

  2. stephennorthcott

    Re : CCD / CMOS

    You are absolutely right. I am a victim of my age. CMOS has other meanings I tend to associate it with first. To me CCD and CMOS are synonymous. Rather like everyone seems to call vacuum cleaners, Hoovers, I have a bad habit of lumping them all under the general title of CCD. When they are actually slightly different implementations of the same technology. CMOS being more suited to low power implementations.

    At the end of the day it should say CMOS in the article, but the rest of the info is correct nonetheless. :)

  3. Troy

    Nothing has changed in the OS? Where have you been? I'm going to buy it regardless of phone connection. I personally, have never had a dropped call in all my years with Cingular, AT&T, etc. The wi-fi connection was made by the way. It was just slow. The phone CAN make wi-fi connections, that connection just happened to be bogged down at the time, or whatever else may have caused it. Thank-you very much.

  4. Gtsmoker

    The comments about the backside illuminated sensor would have sounded much more credible if you were aware that they are CMOS, not CCD.
    As for the OS, nothing has changed. They installed iMovie app and called OS4.
    It still will drop calls like the 3g and 3gs models and as demonstrated at the big show even the ability to maintain a wi-fi connection is iffy at best.
    It does have a cool new slim appeal to it though and is guaranteed to set new sales records.

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