What are the network frequency bands of the three major operators in Japan?

These frequency bands mentioned by Japanese telecom operators are not fully supported.

It can be used if it covers the frequency bands covered by the Japanese telecommunications carriers in the figure below.

Before helping a Japanese foreign teacher buy a mobile phone in China, he thought that it was best to use a card in Japan, but not all the frequency bands supported by mobile phones cover the frequency bands of Japanese operators, although now many domestic 4G mobile phones can support the Japanese frequency band, but because of different regions, when the 4G network cannot be used in some places in Japan, the mobile phone frequency band does not support Japan's 2 3G network is not used.

If you want to bring a mobile phone from China to Japan, you must check the frequency bands supported by the mobile phone in advance, and go directly to Japan to buy it if you are afraid of trouble.

Japanese carriers have non-mainstream.

Frequency bands, for example, NTT uses AWS (1700M, 米国.

Tmobile also uses this band), SoftBank.

of 1500 of the world for other uses.

Another problem is that NTT low-frequency uses U800 (this frequency band is now occupied by telecom C networks in China), and there are almost no supported terminals in China.

However, if you use SoftBank, I think it should not have much impact if you don't support 1500, because in urban areas, it is generally covered by high frequency + low frequency. The high frequency is to solve the capacity problem, even if there is only U900 in urban areas, it is nothing more than a little slower, and it will not be directly service-free like NTT U800.

There are three major mobile operators in China, and there are five major mobile operators in Japan, namely Docomo, Softbank, AU, eMobile and Willcom. It's different from operators in China.

Expansion: 1Operator:

It refers to the first provider of network services, such as Nokia, Samsung, and other manufacturers of these communication equipment are called manufacturers, and China Unicom, China Telecom, China Mobile, China Radio and Television are called operators. Because the state is quite strict in telecommunications management, only companies with an operating license issued by the Ministry of Industry and Information Technology can set up networks; From the perspective of the communications industry, equipment manufacturers and operators are interdependent, but operators generally have more advantages.

is a Japanese telecommunications company. Japan's largest mobile communications operator with more than 60 million subscribers. We provide 3G network services throughout Japan and have been providing LTE commercial network services since 2010.

The mobile phones of the three major operators can roam in Japan, and the current roaming tariffs for telecom mobile phone cards in Japan are as follows.

Japan's network is also divided into 2G, 3G, and 4G, and the operators are Japan KDDI, Japan NTT DOCOMO (WCDMA), Japan Softbank Mobile (Former Vodafone), Japan eMobile, Japan KDDI, and the supported networks depend on the operator, and the domestic telecommunications, mobile, and China Unicom have their own similarities and differences.

There are three well-known operators in Japan, which can be understood as DOCOMO corresponds to China Mobile, Softbank corresponds to China Unicom, and AU corresponds to China Unicom.

Due to the small size of Japan, the signal coverage is good and the Internet speed is very fast. It is equivalent to China Unicom.

The frequency bands used by WCDMA are:

The uplink direction is 1920-1980MHz The direction of the mobile phone to the network The downward direction is 2110-2170MHz The direction of the network to the mobile phone The frequency band used by WCDMA all over the world is this.

However, operators around the world need to purchase a small segment of these frequency bands to operate WCDMA, and the symmetrical uplink and downlink are at least 5MHz to be networked, and 5MHz can be provided to users to use a frequency point.

There are now four mobile operators in Japan, NTT Docomo, KDDI, Softbank, and eMobile

Among them, KDDI is a CDMA network, not mentioned. The other three are all WCDMA networks.

There are three frequency bands used by NTT DOCOMO, 800MHz 1700MHz 2100MHz; The frequency band used by Softbank is only 2100MHz; Whereas, emobile is different from the first two and uses 1700MHz.

Unicom uses 2100MHz, so if you use Unicom's 3G phone, you can roam to Japan's NTT Docomo and Softbank networks, and vice versa.

One last question.

Due to the inconsistency of WCDMA frequency bands in different countries, there is no way to roam in any country unless the mobile phone is full-band. The full frequency band includes 800, 850, 900, 1700, 1800, 1900, 2100, etc.

However, it is certain that there is basically no problem with 2100MHz in Europe and the Asia-Pacific region, and there is basically no problem with 850 1900 in Latin America and North America.

There are three operators in China <>: China Mobile, China Unicom and China Telecom. The business we handle can only be selected from the ** set by these operators. Xiaote today will talk about "what are the most pitiful things about mobile phone operators".

1.You can't cancel your SIM card in a different place.

If you go to work or study in other places, but want to cancel your mobile phone card number, you only need to handle it locally, no arrears, no refund of overcharges, no unexpired business, etc. We can only be forced to accept these unreasonable demands.

2.Buy a mobile phone and get a phone bill, the minimum phone bill.

Now all the transport cover pickpocketing businesses will cooperate with mobile phone companies to provide consumers with more preferential benefits, buy mobile phones and send phone bills, on the surface under the banner of cost-effectiveness, in fact, it is forced consumption, such as at least a few dozen yuan or hundreds of yuan per month, if you did not ask clearly, you will face hundreds of yuan per month phone bill consumption.

Please click here for a ** description.

3.The mobile phone card is upgraded and updated, and the business needs to be re-handled.

Many early mobile phone users have handled the dynamic zone or global pass, Shenzhou line and so on, at that time, the monthly rent of the mobile phone ** of Wuchangli may only cost a few yuan. Now with the continuous upgrading of mobile phone cards and the change of mobile phone cards, operators often prompt to change mobile phones, and the clever use of Fei Youqiao has increased.

4.Provincial traffic and national traffic.

For the provincial traffic and the national traffic, many users do not understand, why should the same traffic be distinguished between domestic and intra-provincial? Some mobile phones** give away provincial traffic, but as a result, many users mistakenly think that it is common across the country, and eventually the traffic is overrun.

Xiaote warmly reminds everyone that "if you go to handle these mobile phone ** business in the future, you must ask a little clearer." I believe that almost everyone has stepped on these pitfalls of mobile phones, and I hope that the three major operators can improve moderately to provide you with more convenient and affordable **.

Mobile. <>

For mobile, the country has the most users, has a good network, due to the willingness to invest, whether it is a town or a village have built a large number of communication base stations, to ensure the transmission of signals, so the signal, for people in remote mountainous areas, many people are willing to choose China Mobile, however, due to the large number of base stations, so the cost is high, resulting in a price reduction is very difficult.

China Unicom Douque.

Unicom is very suitable for urban use, because it is cheap, and the traffic is more, but Unicom's signal and mobile telecommunications are incomparable, because relatively speaking, his base station is less, in the countryside, there is no signal if you don't agree, so many people are reluctant to choose Unicom, and Unicom broadband is not very stable.

China Telecom. <>

Telecom has been saying that the main focus is the broadband business, and the broadband of the telecom is undoubtedly recognized as good, although it is expensive, but the quality is high. **The business is also good, but telecom has a fatal shortcoming, generally you have to have a telecom mobile phone to use a telecom card, but in the past, when there was no full Netcom, many people did not choose telecom for this reason, resulting in not too many people.