WiFi

Improvements to WiFi come every generation partly just due to better combo chips coming from Broadcom's aggressive roadmap in that space, and we wouldn't be surprised to see further generational improvement here. If you read our reviews, this will sound like a broken record, but the inclusion of 5 GHz WiFi support in smartphones is something that is starting to become relatively mainstream at the high end, and we wouldn't be shocked to see the iPhone follow suit.

The location of that antenna moved from the external metal band on the GSM iPhone 4 to an internal printed one with the CDMA iPhone 4 so that the top band could be repurposed for cellular receive diversity, something the 4S inherited. I would strongly expect that to continue with the next device given the aforementioned MIMO requirements for LTE. Multi spatial stream support for WiFi is still basically out of the question, improvements in this space are again possible 5 GHz support with 40 MHz channels, which we've seen from BCM4334 in other shipping devices already.

Apple iPhone - WiFi Trends
  Release Year WiFi + BT Support WiFi Silicon
iPhone 2007 802.11 b/g, BT 2.0+EDR Marvell W8686, CSR BlueCore
iPhone 3G 2008 802.11 b/g, BT 2.0+EDR Marvell W8686, CSR BlueCore
iPhone 3GS 2009 802.11 b/g, BT 2.1+EDR Broadcom BCM4325
iPhone 4 2010 802.11 b/g/n (2.4GHz), BT 2.1+EDR Broadcom BCM4329
iPhone 4S 2011 802.11 b/g/n (2.4GHz), BT 4.0+EDR Broadcom BCM4330
iPhone Next 2012 ? Broadcom BCM4334?

 

Battery

Battery life on a device is obviously a function of the inherent efficiency of its components, but also is a function of overall battery capacity. Increasing the size of that tank obviously gets you immediate gains in overall lifetime, at the expense of increasing the mass or volume of the device. The iPhone has been no stranger to increases in battery life, and in fact the iPhone 4 realized a considerable jump in overall battery size thanks to the side by side PCB / battery split that has now dominated smartphone design. Since then we haven't seen as much of an increase in capacity, and meanwhile some Android phones are shipping batteries as large as nearly 8 Whr (2100 MaH, 3.8V in SGS3).


Higher capacity iPhone Battery (courtesy: 9to5Mac)

Recent leaks out of China have, howver, indicated that the next iPhone will likely move to a higher voltage chemistry, up from 3.7 V nominal to 3.8 V nominal. This follows the move that Motorola made over a year ago to the 3.8 V nominal chemistry where I saw it the first time. Since then Motorola has shipped almost all its phones with 3.8 V batteries, followed by Nokia and Samsung. Thus it seems highly likely that Apple will also move to this chemistry given maturity and the tangible benefits it provides to battery lifetime.

Apple iPhone - Battery Trends
  Release Year Battery
iPhone 2007 1400 mAh, 3.7V (5.18 Wh)
iPhone 3G 2008 1150 mAh, 3.7V (4.25 Wh)
iPhone 3GS 2009 1219 mAh, 3.7V (4.51 Wh)
iPhone 4 2010 1420 mAh, 3.7V (5.25 Wh)
iPhone 4S 2011 1430 mAh, 3.7V (5.29 Wh)
iPhone Next 2012 1440 mAh, 3.8V (5.47 Wh)

 

Conclusions

Based on everything we've seen, and the analysis on the previous pages, it seems likely that the next iPhone will feature a dual-core Cortex A9 SoC built on Samsung's 32nm LP (HK+MG) process, with a PowerVR SGX 543MP2 driving a larger 4-inch display. Battery capacity will see a slight bump, but battery life itself should be measurably better compared to the iPhone 4S thanks to a move to 28/32nm silicon for the baseband and apps processor. LTE and TD-SCDMA support will likely be driven by a Qualcomm MDM9x15. Evolutionary improvements in the WiFi stack are a reasonable expectation, however NFC support isn't. There are still questions about final details (e.g. camera sensors) but a lot of what Apple has been doing with the iPhone closely follows an aggressive 2-year design and silicon cadence. It's the relentless competition and hyper Moore's Law curve in the smartphone space that drive Apple's development cycle here. I don't expect much change here for the next couple of years at least.

Despite the annual release schedule and a 2-year cadence for most silicon elements, Apple also appears to remain relatively conservative in how it adopts new technologies. Process nodes, new chip architectures, and new wireless standards are all evaluated with a fairly conservative eye. Apple's iPhone business is a well oiled machine at this point, any unnecessary risks are consistently avoided.

NFC, Unlikely
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  • doobydoo - Wednesday, August 29, 2012 - link

    The SG3 has a 1.5 GHz MSM8960 Dual Core Krait, not a quad core - in the USA. Reply
  • 8steve8 - Tuesday, August 28, 2012 - link

    Krait is much faster per core, quad core isn't the only or best way to improve performance. Reply
  • swb311 - Tuesday, August 28, 2012 - link

    I'd guess about 1.2 Ghz. which will be more than enough Reply
  • tipoo - Monday, September 10, 2012 - link

    My best hope would be that they put those chip designer purchases to good use and pulled a Krait, no need for apps to use four cores, just two faster cores. Reply
  • Aikouka - Tuesday, August 28, 2012 - link

    I see people talk about the litigation with Samsung affecting Apple's relations with Samsung, but I don't really suspect that is the case. The reason is that Samsung is a rather large company, and if you've worked for a large company before, you know how separate the different business areas truly can be. Do you think Samsung Foundries (the business area that handles chip manufacturing) really wants to hurt their numbers just because Samsung Mobility (the business area that handles mobile devices) is in a spat with one of their customers? I *highly* doubt it. Samsung Foundries more than likely passes up its financials just like Samsung Mobility to the overall corporation, and I highly doubt that they want to report such a large delta as losing Apple would be. Apple just wants what's best for Apple, which might be switching to TSMC as you mentioned.

    In other words, I don't see Samsung (Foundries) dumping Apple, but rather Apple dumping Samsung (Foundries).
    Reply
  • akibakun - Tuesday, August 28, 2012 - link

    Dear Editor,

    There are some politically charged watermarks Japanese in the phones posted on the NFC page. MacRumors has censored the watermarks.

    http://www.macrumors.com/2012/08/26/photos-of-asse...

    You may want to do the same.
    Reply
  • etamin - Tuesday, August 28, 2012 - link

    So Xiaomi is going to have a Krait device in the market before a Cortex A15 device comes to market? Reply
  • alxx - Tuesday, August 28, 2012 - link

    Would be nice to see a rouge gpu core but probably unlikely maybe in ipad mini

    Will be interesting to see if the updated itunes drops this year for one of the product launches or have to wait until early next year.

    No sure that a lot of people are going like Apple's maps app.
    It loads slower than google maps(iphone 4) and the level of detail is different for icons/places/shops(some worse some much better)

    Seems to do directions better than google maps
    Reply
  • swb311 - Tuesday, August 28, 2012 - link

    It's in beta. It will actually load faster thanks to vectored graphics. Reply
  • alxx - Tuesday, August 28, 2012 - link

    No kidding. How else do you think I'm using it.

    At the moment its not loading faster and is getting stalls worse than google maps
    Reply

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