Mobile Network Experience Report South Korea December 2019

South Korea

Mobile Network Experience Report
December 2019

Opensignal Active Userbase in South Korea
Total Devices
2,149,111
Total Measurements
537,934,695
Data Collection Period
Aug 01 Oct 29, 2019

Opensignal is the independent global standard for analyzing consumer mobile experience. Our industry reports are the definitive guide to understanding the true experience consumers receive on wireless networks.

Author
Ian Fogg VP Analysis

Key findings

SK telecom wins Download Speed Experience award by over 20 Mbps

Speeds in Korea are the world's fastest. Opensignal award winner, SK telecom, sees users experience astonishing average speeds of 69.8Mbps. With 5G adoption moving extremely quickly this speed is set to improve dramatically. Users on Korea's other operators, LG U+ and KT, also see very fast speeds that are so fast that they would win Opensignal's Download Speed award in almost every other country.

LG U+ is first for Latency Experience with a speedy 37.4 ms

All three operators improved their scores in the last six months. Latency is an important measure for web browsing and for online multiplayer gaming and reflects the responsiveness of the network experience. However, SK telecom and KT are close behind with latency scores slightly slower of 40.4 and 38.3 ms respectively. The designers of 5G technology aim to significantly improve latency and because of Korea's very rapid 5G adoption, Korean users should see 5G-related improvements with latency soon.

Upload Experience is a tie between LG U+ and SK telecom

Sharing video, audio, and photos is a mainstream part of the mobile network experience now. While uploads speeds have not yet been dramatically changed by the arrival of 5G, two of Korea's operators still saw an increase in the upload speeds that their users enjoyed. SK telecom users had a speed boost of almost 1 Mbps to reach 17.0 Mbps, while third placed KT narrowed the gap on the twin leaders with their users' upload speed rising by 1.7 Mbps. While LG U+ was the joint award winner again, its users speeds were unchanged, meaning that it risks losing the upload award to SK telecom next time if SK telecom continues on its current upward trend.

In a close race, SK telecom just wins Video Experience with a Very Good rating

Despite the fast download speeds experienced in Korea, all three operators miss out on an Excellent rating in Video Experience. SK telecom is just 3.1 points off the highest video category, while LG U+ and KT are in the middle of the Very Good category (65 < 75 in our 100-point scale). These scores indicate users will see short video loading times and little stalling during playback. However, operators in other countries where users have slower download speeds are able to offer their users an Excellent Video Experience, showing very fast download speeds do not automatically mean users will enjoy the best Video Experience.

In Opensignal's new Voice App Experience LG U+ takes the award

However, this measure saw KT's best result in Opensignal's analysis of Korean users’ mobile network experience. Voice App Experience measures the communication experience typical of popular voice apps like Whatsapp, KaKaoTalk or LINE. On a 100-point scale, KT and SK telecom drew for second place with a score of 79.9 just behind the LG U+ mark of 82.0.

Introduction

Opensignal Awards Table

Mobile Experience Awards, South Korea
December 2019, South Korea Report
4G Availability
Video Experience
Voice App Experience
Download Speed Experience
Upload Speed Experience
Latency Experience
Download Image
Mobile Experience Awards Winners
December 2019, South Korea
4G Availability
Video Experience
Voice App Experience
Download Speed Experience
Latency Experience
Mobile Experience Awards Draws
December 2019, South Korea
Upload Speed Experience
Download Image

Overview

Click on metric labels below for a quick preview
4G Availability
% of time
SK telecom
99.0
LG U+
99.5
KT
97.5
0 25 50 75 100
The brackets represent confidence intervals.
Download Image

National Analysis

4G Availability

4G Availability
% of time
SK telecom
99.0
LG U+
99.5
KT
97.5
0 25 50 75 100
The brackets represent confidence intervals.
Download Image

Video Experience

Video Experience
in 0-100 points
SK telecom
71.9
LG U+
67.2
KT
68.9
0 10 20 30 40 50 60 70 80 90 100
The brackets represent confidence intervals.
Download Image
Video Experience
Supporting Metrics
in 0-100 points
4G Video Experience
72.2 (± 0.28) 68.1 (± 0.48) 71.5 (± 0.38)
+/- numeric values represent confidence intervals.
Mobile Network Experience Report | December 2019 | © Opensignal Limited
4G Video Experience in 0-100 points
72 (± 0.28)
68 (± 0.48)
72 (± 0.38)
Mobile Network Experience Report | December 2019 | © Opensignal Inc.

Voice App Experience

Voice App Experience
in 0-100 points
SK telecom
79.9
LG U+
82.0
KT
79.9
0 10 20 30 40 50 60 70 80 90 100
The brackets represent confidence intervals.
Download Image
Voice App Experience
Supporting Metrics
in 0-100 points
4G Voice App Experience
80.1 (± 0.18) 82.2 (± 0.27) 80.4 (± 0.23)
+/- numeric values represent confidence intervals.
Mobile Network Experience Report | December 2019 | © Opensignal Limited
4G Voice App Experience in 0-100 points
80 (± 0.18)
82 (± 0.27)
80 (± 0.23)
Mobile Network Experience Report | December 2019 | © Opensignal Inc.

Download Speed Experience

Download Speed Experience
in Mbps
SK telecom
69.8
LG U+
48.1
KT
47.3
0 17.5 35 52.5 70
The brackets represent confidence intervals.
Download Image
Download Speed Experience
Supporting Metrics
in Mbps
4G Download Speed
64.5 (± 0.61) 43.8 (± 0.63) 44.8 (± 0.48)
+/- numeric values represent confidence intervals.
Mobile Network Experience Report | December 2019 | © Opensignal Limited
4G Download Speed in Mbps
64 (± 0.61)
44 (± 0.63)
45 (± 0.48)
Mobile Network Experience Report | December 2019 | © Opensignal Inc.

Upload Speed Experience

Upload Speed Experience
in Mbps
SK telecom
17.0
LG U+
16.8
KT
13.0
0 5 10 15 20
The brackets represent confidence intervals.
Download Image
Upload Speed Experience
Supporting Metrics
in Mbps
4G Upload Speed
17.3 (± 0.16) 17.0 (± 0.24) 13.4 (± 0.12)
+/- numeric values represent confidence intervals.
Mobile Network Experience Report | December 2019 | © Opensignal Limited
4G Upload Speed in Mbps
17 (± 0.16)
17 (± 0.24)
13 (± 0.12)
Mobile Network Experience Report | December 2019 | © Opensignal Inc.

Latency Experience

Latency Experience
in ms The lower the figure the better the latency
SK telecom
40.4
LG U+
37.4
KT
38.3
0 11.25 22.5 33.75 45
The brackets represent confidence intervals.
Download Image
Latency Experience
Supporting Metrics
in ms
4G Latency
40.0 (± 0.07) 37.7 (± 0.12) 37.7 (± 0.10)
+/- numeric values represent confidence intervals.
Mobile Network Experience Report | December 2019 | © Opensignal Limited
4G Latency in ms
40 (± 0.07)
38 (± 0.12)
38 (± 0.10)
Mobile Network Experience Report | December 2019 | © Opensignal Inc.
Learn more

Opensignal measures the real-world experience of consumers on mobile networks in the places they live, work and travel.

We continually adapt our methodology to best represent the true experience of smartphone users. Therefore, comparisons of the results to past reports should be considered indicative only.

For every metric we calculate statistical confidence intervals indicated on our graphs. When confidence intervals overlap, our measured results are too close to declare a winner. In those cases, we show a statistical draw. For this reason, some metrics have multiple winners.

In our bar graphs we represent confidence intervals as boundaries on either sides of graph bars. In our supporting-metric charts we show confidence intervals as +/- numerical values.

More about Methodology

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For every metric we calculate statistical confidence intervals indicated on our graphs. When confidence intervals overlap, our measured results are too close to declare a winner. In those cases, we show a statistical draw. For this reason, some metrics have multiple operator winners.

In our bar graphs we represent confidence intervals as boundaries on either sides of graph bars.

In our supporting-metric charts we show confidence intervals as +/- numerical values.

Why confidence intervals are vital in analyzing mobile network experience

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