From KDDI's service area map (as of December 26, 2021).Pink is a frequency band for 5G, orange is a 5G area in a 4G diversion band, but it can be seen that the conversion of 4G bands is mainly covered in the city center in Tokyo.
5G in Japan, which started a terrible start due to corona.In 2021, the area development has progressed rapidly, and the number of smartphones has increased, and the environment where 5G is easy to use is rapidly preparing.On the other hand, there are issues and problems unique to the transitional period, and it is honest that both individuals and companies are still searching for interest use.I want to look back on 5G in 2021.[Image] 5G terminal that cuts less than 20,000 yen
5G compatible in both areas and terminals expands rapidly
Although commercial services began in 2020, the main development of base stations was hardly advanced, and the Tokyo Olympics, which should have been an appealing place due to the expansion of the new colonovirus, have been postponed, and the worst start has been cut off.5G in Japan.So how did the environment surrounding 5G change in 2021, one year later?First of all, in the area, it can be said that the 5g area cover finally progressed in earnest in 2021.To be honest, the 5G area as of 2020 was just a "dot" as the Wi-Fi spot, and it was impossible to connect to 5G unless it went to a specific place, but from 2021, especially from the second half of the majority.It is an impression that the company has rapidly expanded the 5G area, and finally can use 5G on the "face".It is great that three companies have finally begun to make a seriousness in the development of 5G, but the other is the diversion of the 4G frequency band.KDDI and SoftBank are 700MHz bands and 3.By converting a frequency band for 4G, such as the 5GHz band, for 5G, and using radio waves lower than the frequency band for 5G, we can promote a wide range of areas in a short period of time.On the other hand, for terminals that use 5G, 2021 was a year when the response progressed rapidly.As of 2020, 5G -compatible smartphones were high in high -end models, but in the first half of 2021, the middle -class smartphones of the middle -class smartphones proceeded rapidly, which greatly contributed to the expansion of users who could use 5G.became.In February 2021, the Xiaomi "REDMI NOTE 9T" sold by SoftBank was a big topic at the cheapest of the 20,000 yen range despite 5G compatible.Since then, in the latter half of 2021, domestic and overseas manufacturers have been launching a low -end 5G smartphone one after another, and now it has been said that an environment has been set up almost 5G if replaced with a new smartphone.
