Vietnam Gets Wi-Fi Calling with MobiFone’s Deployment of Taqua’s Virtual Mobile Core and Client

HANOI, Vietnam & RICHARDSON, Texas--()--Taqua, a leading supplier of IP communications systems, applications and services to mobile and fixed operators, today announced that MobiFone Corporation is the first telecommunications services provider in Vietnam to launch a Wi-Fi Calling service. The MobiFone service name is WiTalk. It uses Taqua’s Virtual Mobile Core (VMC), as well as Taqua’s Mobile Client to enable Wi-Fi Calling on Android smartphones that do not have native dialer support for Wi-Fi Calling.

“We chose Taqua because we wanted to come to market fast, and because they have a proven track record in deploying Wi-Fi Calling with Tier 1 mobile operators around the world”

For MobiFone, who is one of the largest mobile network operators in Vietnam, the addition of Wi-Fi Calling enables its subscribers to make phone calls and send text messages over any Wi-Fi network in the same way as they do when using the standard cellular network. As a result, subscribers can receive high quality voice and messaging services in the places they spend most of their time, such as at home and the office. Taqua’s approach to Wi-Fi Calling is transparent to subscribers as it enables them to continue using the native dialer app, contacts app, call history and voice mail on their handset when connected to Wi-Fi or the cellular network.

To activate the new WiTalk service, MobiFone subscribers can download WiTalk by MobiFone from the Google Play Store. WiTalk is an effective solution for subscribers who may have a poor cellular network connection but have access to a good Wi-Fi network. Also, when traveling out of country, MobiFone subscribers can text and make calls over Wi-Fi networks with lower call tariffs, rather than using regular international roaming services. In addition, these traveling MobiFone subscribers will not be charged for receiving calls by using WiTalk.

“We chose Taqua because we wanted to come to market fast, and because they have a proven track record in deploying Wi-Fi Calling with Tier 1 mobile operators around the world,” said Mr. Nam Bui Son, Deputy Managing Director of MobiFone Corporation at MobiFone. “MobiFone always uses creativity to provide our subscribers with effective solutions in order to help them with ‘Connecting values and Evoking potential.’ After our evaluation of vendors, we turned to Taqua and they were able to very quickly integrate their system into our core network and complete our rigorous trial. With the completion of this trial, we have now begun to roll out the commercial service offering to our subscriber base. In the near future we hope to extend WiTalk to overseas Vietnamese.”

Taqua’s VMC is a virtualized IP Multimedia Subsystem (IMS) services core that enables rapid deployment of next-generation mobile voice and messaging services including VoWiFi and VoLTE. For the complete release, please visit our webpage:

About MobiFone

MobiFone Corporation (under the brand name MobiFone) is a major Vietnamese mobile network operator headquartered in Trung Hoa Nhan Chinh, Hanoi. Founded on April 16, 1993, as a GSM launcher, MobiFone is the first and currently second largest telecommunications provider in Vietnam. For more information, please visit


Ketchum for Taqua LLC
Alex Fencl, 404-879-9122