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T-Mobile launches VoLTE but only in one city


News by Andrew Kameka on Thursday May 22, 2014.

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T-Mobile today became the third of the four major carriers in the United States to launch its Voice over LTE (VoLTE) service. However, VoLTE is launching is only in the company's home base of Seattle. T-Mobile US today announced that it is now delivering VoLTE with HD Voice on the LG G Flex, Samsung Galaxy Note 3, and Samsung Galaxy Light. Subscribers in the Seattle area should see an update shortly that makes it possible to route calls over T-Mobile's LTE network. That should also enable calls to be setup twice as fast and be noticeably clearer. More cities will gain similar capabilities throughout the year.

In the meantime, T-Mobile CTO Neville Ray has published a blog post explaining the basics of how the technology works and what subscribers can expect:

"VoLTE calls will be carried over IP on our LTE network instead of a circuit-switched path on our 4G HSPA+ network. This is advantageous because your phone stays on our wicked fast LTE network to make a call. The tricky bit in all this is the smooth mobility between our various radio layers. Enhanced Single Radio Voice Call Continuity (eSRVCC) is a new LTE Advanced function and we're excited to be the first to deploy it in the U.S. All of this basically helps ensure that your capable phone won't drop a call if you leave an LTE area and it switches to 4G HSPA+ or 2G coverage."

source: T-Mobile

 
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Andrew Kameka
Andrew is based in Miami, Florida.

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