Mobile
Rank
62 -
Download
95.03 Mbps
Upload
14.21 Mbps
Latency
42 ms
Fixed Broadband
Rank
8 +1
Download
329.72 Mbps
Upload
236.10 Mbps
Latency
20 ms
Mobile
Rank
59 +1
Download
51.95 Mbps
Upload
9.36 Mbps
Latency
35 ms
Created with Highcharts 9.3.30204060
Created with Highcharts 9.3.311 / 202311 / 202402040
Fixed Broadband
Rank
21 -3
Download
196.42 Mbps
Upload
128.49 Mbps
Latency
12 ms
Created with Highcharts 9.3.3080160240
Created with Highcharts 9.3.311 / 202311 / 20240816

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.

Market Analysis

Fastest Providers - Download

Speedtest Intelligence® reveals that among top mobile operators in Japan in Q4 2023, Rakuten Mobile delivered the fastest median download speed at 51.16 Mbps.

Median Download Speed Mbps
Provider

51.16

Rakuten Mobile

47.09

NTT DoCoMo

46.90

SoftBank

46.23

au

0204060
Error bars indicate 95% CI

Fastest Providers - Upload

Calculating median upload speed for top mobile operators in Japan during Q4 2023, Rakuten Mobile had the fastest median upload speed at 20.21 Mbps.

Median Upload Speed Mbps
Provider

20.21

Rakuten Mobile

9.27

SoftBank

7.43

au

6.63

NTT DoCoMo

0102030
Error bars indicate 95% CI

Median Multi-Server Latency

Our mobile multi-server latency results in Q4 2023 showed that among top providers, SoftBank registered the lowest median multi-server latency in Japan at 43 ms.

Median Multi-Server Latency ms
Provider

43

SoftBank

51

Rakuten Mobile

52

au

59

NTT DoCoMo

0204060
Error bars indicate 95% CI

Consistency

In measuring the consistency of each operator’s performance, we found that Rakuten Mobile had the highest Consistency in Japan during Q4 2023, with 90.6% of results showing at least a 5 Mbps minimum download speed and 1 Mbps minimum upload speed.

Consistency (%)
Provider

90.6%

Rakuten Mobile

84.6%

SoftBank

82.9%

NTT DoCoMo

79.5%

au

Device Information

An analysis of performance on some of the fastest phones in Japan 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 PlusApple75.9210.7652
iPhone 15 Pro MaxApple75.2710.8451
iPhone 15 ProApple74.1710.6251
iPhone 15Apple72.2510.5351
iPhone 14Apple66.089.9350

Manufacturer Information

We examined combined performance by major cell phone manufacturers and found that there was no statistical winner in Japan during Q4 2023.

Manufacturer
Median
Download
Mbps
Median
Upload
Mbps
Median
Median Multi-Server Latency
ms
Google50.399.7249
Apple50.298.3453
Sony48.006.7554
Samsung42.957.8853
Oppo38.899.0353

Chipset Information

Looking at five of the fastest chipsets in Japan, we found that Snapdragon X70 5G had the fastest median download speed during Q4 2023 at 74.64 Mbps.

Chipset
Manufacturer
Median
Download
Mbps
Median
Upload
Mbps
Median
Median Multi-Server Latency
ms
Snapdragon X70 5GQualcomm74.6410.7451
Snapdragon X65 5GQualcomm65.799.9152
Snapdragon 8 Gen 1Qualcomm59.948.6152
Snapdragon X60 5GQualcomm59.688.6052
Tensor G2Google54.9510.1449

Powered by