Starting June 2024, location inclusion criteria use the Precision Threshold for mobile and fixed broadband. Results are updated mid-month for the previous three months.
Ookla Research™
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.
146.20 LG U+ | ||||
133.55 SK broadband | ||||
127.36 KT | ||||
| 0 | 50 | 100 | 150 | 200 |
Fastest Providers - Upload
Speedtest Intelligence® reveals that there was no statistical winner among top fixed broadband providers in South Korea in Q4 2023.
106.62 LG U+ | |||
105.05 KT | |||
94.69 SK broadband | |||
| 0 | 50 | 100 | 150 |
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.
57 LG U+ | |||||
87 SK broadband | |||||
90 KT | |||||
| 0 | 20 | 40 | 60 | 80 | 100 |
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.
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.
192.67 SK Telecom | |||
117.14 LG U+ | |||
107.92 KT | |||
| 0 | 100 | 200 | 300 |
Fastest Providers - Upload
Speedtest Intelligence® reveals that there was no statistical winner among top mobile operators in South Korea in Q4 2023.
19.74 LG U+ | |||
19.46 SK Telecom | |||
13.27 KT | |||
| 0 | 10 | 20 | 30 |
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.
76 LG U+ | ||||
114 KT | ||||
176 SK Telecom | ||||
| 0 | 50 | 100 | 150 | 200 |
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.
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 Max | Apple | 350.87 | 27.27 | 109 |
| iPhone 15 Pro | Apple | 307.14 | 25.48 | 115 |
| Galaxy Z Fold5 | Samsung | 306.02 | 28.24 | 104 |
| Galaxy Z Flip5 | Samsung | 294.32 | 26.33 | 97 |
| Galaxy S23 Ultra | Samsung | 258.83 | 25.40 | 100 |
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 |
|---|---|---|---|
| Apple | 151.77 | 17.71 | 110 |
| Samsung | 142.27 | 17.14 | 102 |
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 5G | Qualcomm | 334.29 | 26.20 | 112 |
| Snapdragon 8 Gen 2 | Qualcomm | 245.75 | 24.33 | 102 |
| Snapdragon X65 5G | Qualcomm | 223.14 | 21.74 | 108 |
| Snapdragon 8+ Gen 1 | Qualcomm | 208.09 | 22.17 | 103 |
| Snapdragon 8 Gen 1 | Qualcomm | 177.08 | 18.84 | 99 |
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