The method of carrying our voices over LTE networks is gaining momentum, with some 66 mobile carriers in 35 countries either in testing or deployed phases.The Global Mobile Suppliers Association (GSA) put out some statistics citing the trials and deployments underway. Of the several dozen carriers working with VoLTE, about 10 have deployed it for commercial service.
Service providers in the United States, Hong Kong, South Korea, Singapore, and Japan are leading the effort. In the US, T-Mobile is at the head of the pack, with HD voice service based on VoLTE in 15 markets. AT&T ...
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