HSPA+, 13 Jan 2014T-Mobile already has plans for this and in all MetroPCS gained LTE areas VoLTE is already ther... moreI found this about metroPCS http://www.droid-life.com/2012/08/07/metropcs-launches-worlds-first-volte-network-and-smartphone-take-that-big-four/
The article doesn't mention AT&T being the first carrier and doesn't mention MetroPCS at all. I did think it was saying AT&T was the first until you mentioned it.
T-Mobile already has plans for this and in all MetroPCS gained LTE areas VoLTE is already there...MetroPCS was doing tests in Texas in the summer of 2013...VoLTE will cover some of the signal gaps...at&t has LTE deployed in the 700mhz spectrum which has awesome signal travel. Once all carries upgrade there network to support it LTE Only devices will cost much less which Verizon should have by the end of the year.
Iphone 5S doesn't support VoLTE? expensive smartphone with an old Specs?
S4 and note3 are the best :)
What Cities will be tested and will it work on the GS4 Google Play Edition? Or did I not read the full article?
Yes, basically voice calls using LTE signals. Voice codecs used are AMR and AMR-WB (can look them up on Wikipedia). AMR-WB offers HD voice quality. Call setup is (from pressing the call to the called device ringing) is about 1s which is cca. 60-100% shorter than before.
Jinks, 13 Jan 2014(volte) calls using lte signals?Did you read the article?? It says that the answer to your question is YES!
Jinks, 13 Jan 2014(volte) calls using lte signals?correct, Voice over LTE. think of it like a cellular version of VoIP.