Mobile
Rank
3 -
Download
286.47 Mbps
Upload
27.32 Mbps
Latency
60 ms
Fixed Broadband
Rank
21 +2
Download
260.13 Mbps
Upload
187.68 Mbps
Latency
35 ms
Mobile
Rank
4 +2
Download
139.38 Mbps
Upload
15.82 Mbps
Latency
58 ms
Fixed Broadband
Rank
28 +3
Download
157.72 Mbps
Upload
94.63 Mbps
Latency
29 ms

Starting June 2024, location inclusion criteria use the Precision Validity Score (PVS) for mobile and fixed broadband. Results are updated mid-month for the previous three months.

Market Analysis

Fastest Providers - Download

Speedtest Intelligence® reveals that among top fixed broadband providers in South Korea in Q4 2023, LG U+ delivered the fastest median download speed at 146.20 Mbps.

Median Download Speed Mbps
Provider

146.20

LG U+

133.55

SK broadband

127.36

KT

050100150200
Error bars indicate 95% CI

Fastest Providers - Upload

Speedtest Intelligence® reveals that there was no statistical winner among top fixed broadband providers in South Korea in Q4 2023.

Median Upload Speed Mbps
Provider

106.62

LG U+

105.05

KT

94.69

SK broadband

050100150
Error bars indicate 95% CI

Median Multi-Server Latency

Our fixed broadband multi-server latency results in Q4 2023 showed that among top providers, LG U+ registered the lowest median multi-server latency in South Korea at 57 ms.

Median Multi-Server Latency ms
Provider

57

LG U+

87

SK broadband

90

KT

020406080100
Error bars indicate 95% CI

Consistency

In measuring the consistency of each fixed broadband provider’s performance, we found that there was no statistical winner for highest Consistency in South Korea during Q4 2023.

Consistency (%)
Provider

89.0%

LG U+

88.9%

SK broadband

87.6%

KT

Market Analysis

Fastest Providers - Download

Speedtest Intelligence® reveals that among top mobile operators in South Korea in Q4 2023, SK Telecom delivered the fastest median download speed at 192.67 Mbps.

Median Download Speed Mbps
Provider

192.67

SK Telecom

117.14

LG U+

107.92

KT

0100200300
Error bars indicate 95% CI

Fastest Providers - Upload

Speedtest Intelligence® reveals that there was no statistical winner among top mobile operators in South Korea in Q4 2023.

Median Upload Speed Mbps
Provider

19.74

LG U+

19.46

SK Telecom

13.27

KT

0102030
Error bars indicate 95% CI

Median Multi-Server Latency

Our mobile multi-server latency results in Q4 2023 showed that among top providers, LG U+ registered the lowest median multi-server latency in South Korea at 76 ms.

Median Multi-Server Latency ms
Provider

76

LG U+

114

KT

176

SK Telecom

050100150200
Error bars indicate 95% CI

Consistency

In measuring the consistency of each operator’s performance, we found that SK Telecom had the highest Consistency in South Korea during Q4 2023, with 89.1% of results showing at least a 5 Mbps minimum download speed and 1 Mbps minimum upload speed.

Consistency (%)
Provider

89.1%

SK Telecom

85.0%

KT

84.5%

LG U+

Device Information

An analysis of performance on some of the fastest phones in South Korea found that there was no statistical winner during Q4 2023.

Device Name
Manufacturer
Median
Download
Mbps
Median
Upload
Mbps
Median
Median Multi-Server Latency
ms
iPhone 15 Pro MaxApple350.8727.27109
iPhone 15 ProApple307.1425.48115
Galaxy Z Fold5Samsung306.0228.24104
Galaxy Z Flip5Samsung294.3226.3397
Galaxy S23 UltraSamsung258.8325.40100

Manufacturer Information

We examined combined performance by major cell phone manufacturers and found that devices from Apple had the fastest median download speed in South Korea during Q4 2023 at 151.77 Mbps.

Manufacturer
Median
Download
Mbps
Median
Upload
Mbps
Median
Median Multi-Server Latency
ms
Apple151.7717.71110
Samsung142.2717.14102

Chipset Information

Looking at five of the fastest chipsets in South Korea, we found that Snapdragon X70 5G had the fastest median download speed during Q4 2023 at 334.29 Mbps.

Chipset
Manufacturer
Median
Download
Mbps
Median
Upload
Mbps
Median
Median Multi-Server Latency
ms
Snapdragon X70 5GQualcomm334.2926.20112
Snapdragon 8 Gen 2Qualcomm245.7524.33102
Snapdragon X65 5GQualcomm223.1421.74108
Snapdragon 8+ Gen 1Qualcomm208.0922.17103
Snapdragon 8 Gen 1Qualcomm177.0818.8499

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