Vietnam , September 2025, Mobile Network Experience
This report looks at Vietnam, focusing on the latest mobile experience results as of September 2025.
Feb 2026
Global Mobile Network Experience Awards 2026
Opensignal sheds light on the difference in the experience seen by our users on different operators across the globe — to better inform users, operators and regulators.
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The State of Mobile Video Experience 2019
In one year mobile Video Experience has significantly improved in 59% of 100 countries analyzed. But the U.S. is lagging behind on mobile video as carriers face a spectrum crunch. Uniquely, Opensignal tests mobile video streaming at scale and does not estimate video experience based on speed tests or other indirect measurements.
Vietnam, September 2019, Mobile Network Experience
Viettel kept our Video Experience award — but this metric is more polarized than before, with all but Vietnamobile now falling in the Good range, where video loads quickly and with little stalling.
Mobile download speeds in Seoul are 41% faster than Singapore or Sydney
Smartphone users in Seoul experience the fastest speeds in any of the Asia Pacific cities we analyzed. Seoul’s Download Speed Experience score of 56.3 Mbps was an astonishing 41% faster than second- placed Singapore or third-placed Sydney, and almost double that of Tokyo or Taipei.
Vietnam, March 2019, Mobile Network Experience
With a score of 86%, Viettel stood head and shoulders above its rivals in our 4G Availability metric.
Multiple operators across the globe hit simultaneously by Ericsson network outage
OpenSignal has identified that December 6th’s mobile network outage hit multiple operators at the same time across the globe.
Seoul top city in East Asia with 4G availability of nearly 98%
At OpenSignal we are currently in the process of boosting our coverage of East Asia, having launched reports in the last six months on <a href="/reports/2018/02/cambodia/mobile-networks-update">Cambodia</a>, <a href="/reports/2018/06/indonesia/state-of-the-mobile-network">Indonesia</a>, <a href="/reports/2018/05/myanmar/state-of-the-mobile-network">Myanmar</a>, <a href="/reports/2018/05/singapore/state-of-the-mobile-network">Singapore</a>, <a href="/reports/2017/12/taiwan/mobile-networks-update">Taiwan</a> and <a href="/reports/2018/04/thailand/mobile-networks-update">Thailand</a>.
Seoul and Singapore top OpenSignal's list of East Asia's fastest 4G cities
In the last year, OpenSignal has ramped up its coverage in East Asia, introducing new State of Mobile Networks reports for <a href="/reports/2018/02/cambodia/mobile-networks-update">Cambodia</a>, <a href="/reports/2018/06/indonesia/state-of-the-mobile-network">Indonesia</a>, <a href="/reports/2018/05/myanmar/state-of-the-mobile-network">Myanmar</a>, <a href="/reports/2018/05/singapore/state-of-the-mobile-network">Singapore</a>, <a href="/reports/2017/12/taiwan/mobile-networks-update">Taiwan</a> and <a href="/reports/2018/04/thailand/mobile-networks-update">Thailand</a>.
