WiFi standards used in Japan and what they mean for your devices
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Japan's Wi-Fi standards (protocols)
July 2018
Japan's Wi-Fi is based on IEEEE's standards and specifications. Basically, there are six Wi-Fi standards (protocols) widely used in Japan.
IEEE802.11a, IEEE802.11b, IEEE802.11g, IEEE802.11n, IEEE802.11ac, and IEEE802.11ad. 11ac is released in 2014 and is the most popular protocol in Japan now. The maximum data rate is 10 times as fast as 11n.
It is ideal to use Wi-Fi routers and devices that are compatible with 11ac protocol in Japan these days.
Two frequencies are used by Japan's Wi-Fi routers and Wi-Fi enabled devices, 2.4GHz and 5GHz. 5GHz is faster and more immune to Wi-Fi interference as less devices use this frequency.
But the higher frequency, 5GHz, tends to be blocked by buildings and other obstacles, thus 2.4GHz frequency has a wider wireless network area compared to 5GHz frequency.
Japan's Wi-Fi routers are usually compatible with both frequencies to provide stable Wi-Fi connections.
| # |
Protocol |
Frequency |
Max Data Rate |
Devices |
| 1 |
IEEE802.11a |
5GHz |
54Mbps |
Android device, wireless lan adapter |
| 2 |
IEEE802.11b |
2.4GHz |
11Mbps |
Nintendo 3DS, PSP |
| 3 |
IEEE802.11g |
2.4GHz |
54Mbps |
iPhone3, PS3 |
| 4 |
IEEE802.11n |
2.4GHz/5GHz |
600Mbps |
iPhone4/4s/5/5s, PS Vita |
| 5 |
IEEE802.11ac |
5GHz |
6900Mbps |
iPhone6, Nintendo Switch |
| 6 |
IEEE802.11ad |
60GHz |
6800Mbps |
- |
Internet Speeds by Internet Connection Types in Japan
| # |
Internet Connection Type |
Max Download Speeds |
| 1 |
Fibre-optic connection |
Approx. 1Gbps |
| 2 |
ADSL |
Approx. 25Mbps |
| 3 |
Mobile Wi-Fi Router |
Approx. 800Mbps |
| 4 |
4G Thethering |
Approx. 25Mbps |
| 5 |
Cable TV Connection |
Approx. 300Mbps |
| 6 |
ISDN |
Approx. 128kbps |
Need internet everywhere, not just at hotspots?Our unlimited pocket WiFi rental in Japan starts at 610 JPY/day, connects up to 10 devices and is delivered the same day in Tokyo and the Kanto area, or within 3 hours in the 23 wards. Staying a month or more? See the plug-in home router rental. Travelling alone with a recent phone? A Japan eSIM from 2,480 JPY is emailed within minutes. Not sure which? Read Pocket WiFi vs eSIM.