What cell phone system is used in japan? There is no single Japan mobile network, but rather a series of networks owned by different companies. All three carriers provide both 3G and 4G LTE networks in and around Tokyo, so generally you shouldn't experience service issues with any of them.What are the cell phone companies in japan? There are three major cell phone companies in Japan: Softbank (the only provider of the iPhone), NTT docomo (provider of Samsung’s Android phones), and au (by KDDI).What are the cell phone carriers in japan? The biggest Japanese mobile phone companies are NTT docomo, au by KDDI and Softbank (formerly Vodafone, and before that J-phone). There are also several smaller companies which provide low-cost cell phone plans for residents and mobile internet products for tourists, but they typically use the networks of the big three companies.
Go to www.willmyphonework.net to enter your phone model number, and the country where you bought it, and you can check which Japanese MVNO networks it will work with. Almost all smartphones from abroad that are less than 5 or 6 years old will work on Docomo and Softbank powered MVNOs. AU runs on a different frequency and so is a bit temperamental.
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The Japanese brand named Au brand began as the mobile (mobile phone) brand of KDDI on November 1st of 2000. The company provides a rich brand experience that enables customers to freely and comfortably do whatever they wish. They do their best to provide a wide coverage all around the country, covering all islands.