AT&T iP5 switches to 4G from LTE when placing a phone call

[sangreal06]

That's because they use two chips, which uses a ton of battery power. The iPhone 5 uses 1 chip, and a lot of effort went into making it this way. Just wait until Voice over LTE is turned on.



Interesting, I read on a blog otherwise, but I guess they were definetly missinformed after reading some more. well regardless the iPhone 5 supports VoLTE, which is where the voice information is sent as a data packet through the LTE data connection.

the iphone 5 does not support VoLTE. This is specifically spelled out in their FCC filings.

image from anandtech, although it's actually written in a few places

Actually, the OP might as well read the anandtech article which goes into great detail about the technical challenges surrounding voice+data: http://www.anandtech.com/show/6295/...ous-voice-and-lte-or-evdo-svlte-svdo-support-

 

[soulvoid]

the iphone 5 does not support VoLTE. This is specifically spelled out in their FCC filings.

Image

image from anandtech, although it's actually written in a few places

Actually, the OP might as well read the anandtech article which goes into great detail about the technical challenges surrounding voice+data: http://www.anandtech.com/show/6295/...ous-voice-and-lte-or-evdo-svlte-svdo-support-

I appreciate the link. Thanks.

 

[Pss2040]

iPhone 5 cannot hold LTE signal

I am having the same problem with my iphone 5--it cannot hold the LTE signal

But seems like a hardware problem, not a network problem My wife's 32gb iPhone 5 (on AT&T) holds the LTE signal all the time. My 64gb iPhone 5 (also on AT&T) constantly switches from LTE to 4G. In fact it always drops to 4G when I use the Maps app. Same iPhone 5s, and on the same network. But only one has a stable LTE connection. Tried all the suggested fixes-none work.

That has to be an iPhone hardware problem. No reason that one iPhone holds the LTE signal all the time, and the other iPhone does not.

 

[xero9]

Is there really any advantage to a phone having VoLTE other than the obvious? The only two advantages I can see is
1) Faster data access while on a call
2) Is able to use a signal network

Don't get me wrong, I'd rather it use LTE for everything, but at the end of the day, does it make a difference as far as my phone call goes?

On a side note, I wonder why the S3 is supposed to support VoLTE, while the iP5 doesn't. I guess maybe in the 5s or 6.