Illinois, Indiana, Minnesota, Wisconsin first to get AT&T HD Voice
AT&T will start to roll out HD Voice across its cellular network from May 23rd, the company has announced. The service, which will operate on an all-IP Voice over LTE (VoLTE) network, will allow customers to make clearer calls over its network, while at the same time being able to continue to use the device's data connection at 4G LTE speeds.
Sprint event asks for attendees to 'hear it for yourself'
Sprint has sent out invitations to an event in New York, asking members of the press to "hear it for yourself." Though the invitation does not specifically mention what exactly will be demonstrated, the April 29th event is likely to be a formal unveiling of Sprint's delayed HD Voice service, and an announcement about the high-quality audio call's national launch.
High-quality voice calls heading to Sprint subscribers this summer
Sprint will be launching its delayed HD Voice on compatible smartphones in the majority of markets across the United States this summer, the head of the carrier has revealed. CEO Dan Hesse revealed during a keynote talk at Oracle Industry Connect that the high-quality voice service will roll out for subscribers throughout the country "around the first of July."
HD Voice service now possible between callers in Romania, Moldova
UK-based wireless provider Orange has began offering its HD Voice data calling service to callers located in different countries. Thus far, however, only callers located in Romania and Moldova on Orange's network (or a branded carrier that uses Orange's network) can enjoy the clearer conversations thanks to a speech transmission format known as Wideband Adaptive Multi-Rate (WB-AMR). Still, Orange calls this feat an important technical breakthrough.
LTE-based calls to increase call clarity, speech bandwidth
Sprint is going to launch its HD Voice LTE service by the end of this year. The service, initially using HTC EVO 4G LTE handsets at both ends and requiring the local network to be upgraded with Network Vision, aims to improve the voice call experience by offering a wider speech bandwidth. South Korea-based SK Telecom will launch its equivalent service tomorrow, using the Samsung Galaxy S III LTE for the pilot program.