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The iPhone 8 and the iPhone 8 Plus include support for the Enhanced Voice Services (EVS) audio codec that offers improved voice quality and better call reliability, KDDI president Takashi Tanaka told Engadget Japan in a recent interview.

EVS is the first codec that offers up to 20 kHz audio bandwidth for higher quality audio, higher frame/packet error resilience, and higher compression efficiency than other speech codecs for a better user experience.

iphone8andiphone8plus.jpg

In the United States, T-Mobile supports Enhanced Voice Services and has offered EVS since early 2016. According to T-Mobile, EVS on its network offers improved voice call reliability in areas of weaker signal for fewer dropped calls and higher-fidelity calls for more realistic voice audio.

AT&T, Sprint, and Verizon have not yet announced support for EVS.

Apple does not mention support for the feature in its iPhone 8 documentation, but UK carrier EE also recently confirmed that the iPhone 8 and 8 Plus work with EVS in a press release announcing EVS support on its network.

Along with T-Mobile and EE, several other carriers in Europe and Asia also support EVS, including Vodafone Germany and NTT DoCoMo.

Article Link: iPhone 8 Supports Enhanced Voice Services Codec for Better Quality Audio on Some Carriers
 

rdy0329

macrumors 6502a
Mar 20, 2012
574
238
T-Mobile, nice. Keep Sprint and its owner the heck away from them, ownership and a merger.

T-Mobile will absorb Sprint and not the other way around as reported in the previous years. T-Mo is actually doing better now.
 

0098386

Suspended
Jan 18, 2005
21,574
2,908
Gosh, I remember when o2 in the U.K. supported Apple, now it’s EE. And nobody uses EE. Wonder if Apple let networks bid on this, and the highest one gets the deal? I’ve seem something similar like that in one creative industry involving major companies, so maybe Apple does that too.
 

splogue

macrumors demi-god
Aug 1, 2008
351
225
Cary, NC
T-Mobile will absorb Sprint and not the other way around as reported in the previous years. T-Mo is actually doing better now.

True. The CEO of T-Mobile will run the merged companies, which is business-speak for Sprint will be absorbed.

Still, I agree with the original poster. T-Mobile has impressed me repeatedly since I moved to them early this year, and I don't want anything to derail or distract them.
 
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rdy0329

macrumors 6502a
Mar 20, 2012
574
238
T-Mobile is a good competitive carrier. Sprint is a bottom of the barrel carrier. If they merge, absorbing Sprint's mediocrity will bring down T-Mobile a few notches.

I think they have the common sense to keep good business practices and just do away with mediocrity. We'll see towards the end of the year and forward.
 

driveparty

macrumors regular
Apr 19, 2008
105
32
Russia / USA
More important, still it offers no support for the only HQ BT audio standard on the market – the QComm aptX! Of course, it still lacks headphone jack.
 

Mornnb

macrumors newbie
Aug 2, 2017
19
29
Sydney
20khz sound? For when I want to stream music to people via a phone call. Still not good enough for calls to my dog’s 60khz capable ears however.
 

OldSchoolMacGuy

Suspended
Jul 10, 2008
4,197
9,050
T-Mobile is a good competitive carrier. Sprint is a bottom of the barrel carrier. If they merge, absorbing Sprint's mediocrity will bring down T-Mobile a few notches.

That's not how Wall Street or the business world sees it. Lemme guess, you're a T-Mobile user.:rolleyes:
 

jent

macrumors 6502a
Mar 31, 2010
892
567
What happens if you use T-Mobile with a Google Voice number, for example? Does Google Voice negate the benefit of codecs like EVS and HD Voice?
 

lunarworks

macrumors 68000
Jun 17, 2003
1,972
5,213
Toronto, Canada
It's amazing that the default voice codec in nearly every phone is some garbage codec from 1989.

Anyway, how does this relate to VoLTE? Or is it a lower level carrier thing?
 

driveparty

macrumors regular
Apr 19, 2008
105
32
Russia / USA
20khz sound? For when I want to stream music to people via a phone call. Still not good enough for calls to my dog’s 60khz capable ears however.
Apparently, you've no idea of what the digital sound quality "composed" of. You'd better consult with your dog, though )))
 

acarney

macrumors 6502
Jul 3, 2007
322
53
Anyone know how this is added at the carrier level? Is this a rather "simple" upgrade in their software package, or does it require hardware sites to all be upgraded and compatible before roll out?

Also, is this a fully end to end transparent thing? Or is the higher quality only when going from supported device to supported device. I know I'm not going to get amazing quality out of 1950's era phone lines in an old building, but will it improve everything up to the ability possible?
 

Mornnb

macrumors newbie
Aug 2, 2017
19
29
Sydney
Apparently, you've no idea of what the digital sound quality "composed" of. You'd better consult with your dog, though )))

The number quoted in the article is the high frequency spec not the bit rate of the audio codec. I do not see how the 14 to 20khz frequency range will make a massive difference to the clarity of a human voice. Given that human voices peak out at about 3khz.

In other words, tell us the audio codec bit rate. Who cares about a 20khz frequency capability for a voice based system?
 
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