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AT&T iPhone 5 will support voice and data simultaneously

No matter how you feel about the iPhone 5 that was unveiled this week, it's an interesting smartphone to most people. However, we're learning that the phone can't support cellular data and voice calls at the same time on certain 4G LTE networks.
Specifically, the iPhone 5 will be unable to handle simultaneous voice and data use on Verizon Wireless and Sprint versions of the device. This is due to a limitation in the CDMA specification that those two networks use. However, some 4G LTE smartphones on the Verizon network will allow users to make voice calls and use data connectivity at the same time. The iPhone 5 is unable to do this due to design decisions that Apple made.
“The iPhone 5 is designed to allow customers to make voice calls on the Verizon Wireless network and surf the Web on Wi-Fi,” Verizon spokeswoman Brenda Raney said in an e-mail. “It was an Apple decision." 

The New York Times reports that when users place a voice call while connected to 4G LTE network the phone call the defaults to the carriers older second or third-generation networks because LTE networks can't support voice calls at this time.

The reason AT&T iPhone 5 buyers can place phone calls and use data at the same time is because both of those functions roll back to the older AT&T 3G network, which is capable handling both simultaneously. 

Sources: New York Times, AnandTech

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does this mean...
By xti on 9/14/2012 10:19:26 AM , Rating: 2
so, in a real world situation, that while someone is on a call, they cant receive emails in the background? the emails would resume downloading after the call is done?

RE: does this mean...
By nafhan on 9/14/2012 10:32:15 AM , Rating: 2
The email thing doesn't sound like a big deal the way you described it, but a more problematic scenario would be talking on speakerphone/headset with the person sending the email. On Verizon/Sprint, with the new iPhone, you would have to hang up, wait a minute a two, and then call the person back to review the email with them.

Another more likely scenario is getting a phone call while using your phone as a wifi hotspot. If you were using your phone as a hotspot and someone called, you would lose the your laptop/tablet would lose it's internet connection.

Obviously, neither scenario would be the end of the world, but could be pretty annoying, especially in a situation where you were in a conference call or something.

RE: does this mean...
By ritualm on 9/14/2012 10:40:14 AM , Rating: 2
Because of the way the iPhone's antenna was set up since the CDMA version of iP4 (and carried over to the 4S and now 5), iP5 cannot use one antenna for voice and the other for data at the same time. It's either one antenna or the other.

They're outta luck unless Apple changes the setup to allow using both antennas simultaneously.

Think of most Apple products in the similar sense as Intel's tick-tock cadence: don't buy the tick version unless you're aware what you're getting into, because the tock will have most of the tick's bugs ironed out.

RE: does this mean...
By smackababy on 9/14/2012 10:53:22 AM , Rating: 2
I thought the iPhone used both antennas to maintain better signal, rather than one or the other.

RE: does this mean...
By TakinYourPoints on 9/14/2012 11:21:34 AM , Rating: 2
Yes, but a third antenna would have been needed based on the Anandtech article.

What it really boils down to is that by using this single Tx chain, Apple is able to support a ton of LTE bands (more space for PAs and fewer transceiver ports used on SVLTE for CDMA networks) and also do it without making the iPhone very large. Moving to an architecture that works with SVDO and SVLTE would require an additional transmit path and antenna, and incur a size and weight penalty.

Allowing simultaneous voice/data on Verizon/Sprint would have resulted in increasing the size of the phone.

RE: does this mean...
By Reclaimer77 on 9/14/2012 11:25:49 AM , Rating: 2
Allowing simultaneous voice/data on Verizon/Sprint would have resulted in increasing the size of the phone.

So what? Your point? Sacrificing good functionality for the refusal to compromise on styling and design isn't a good excuse.

RE: does this mean...
By Dr of crap on 9/14/2012 12:08:19 PM , Rating: 2
Size and weight????
I think another few mm can be found on the circuit board, and a few micrograms in weight - really?

RE: does this mean...
By Reclaimer77 on 9/14/2012 12:39:39 PM , Rating: 2
Yeah lol, but it's Takin what can you expect? He'll say anything to defend Apple.

RE: does this mean...
By TakinYourPoints on 9/14/2012 1:52:35 PM , Rating: 2
How is it a defense? I was simply explaining via the Anandtech article why they didn't do it. Whether or not that affects someone's buying decision is up to the individual.

You're always so mad.

RE: does this mean...
By themaster08 on 9/16/2012 2:20:37 AM , Rating: 2
I agree that Reclaimer can get pretty mad at times, but there's a perfectly valid point at hand here.

Apple is cleary sacrificing functionality for form. Would anyone have cared if the device was a few mm thicker? It's already an extremely thin device. Or perhaps it's a case that Apple need this, NFC and other missing features to include as their revolutionary changes in their next uninspired device.

Let's get real here. What are the main changes from the 4S...
Slight change in design, making it thinner and lighter.
A larger screen (Which I personally think looks too long, however I understand their reasoning)
Increased performance

All of these are incremental changes that would be expected, apart from it being thinner and lighter, which is fairly impressive. But where's the WOW factor? The 4S was an incremental change from its predecessor, so Apple have had virtually 2 years to release something new. I personally think the iPhone 5 is a great looking device, and from the quick look videos I've seen, it's an extremely fast device as well. I just don't think it deserves the attention its received, because there's nothing that wasn't expected.

Now compare that to other iteration releases from other manufacturers, such as the Galaxy S2 - Galaxy S3, or the Lumia 900 - Lumia 920. The differences are much more significant, and much more compelling to upgrade from their predecessors.

If Apple had released the Lumia 920 it would have been touted as the second coming. But because it's a Nokia phone, its announcement is pushed to the sidelines to make way for what is, in my opinion, a much inferior device (Don't get started about the ecosystem. I'm talking about the devices themselves).

RE: does this mean...
By jbeenemd on 9/14/2012 11:54:31 AM , Rating: 2
I don't get it. They had a whole year to redesign their next phone to prevent people from "holding it wrong" and still did not get it right!!!

“We do believe we have a moral responsibility to keep porn off the iPhone.” -- Steve Jobs
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