www.soumu.go.jp/joho_tsusin/eidsystem/competition12_02.html
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総務省｜テレコム競争政策ポータルサイト｜各携帯電話事業者の通信方式と周波数帯について
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https://www.soumu.go.jp/joho_tsusin/eidsystem/competition12_02.html
About this page
This page is part of the Ministry of Internal Affairs and Communications' Telecom Competition Policy Portal Site, providing information about communication methods and frequency bands used by each mobile phone operator. Located within the SIM lock removal section, it details the communication systems and allocated frequency bands for mobile carriers. The site offers comprehensive access to various telecommunications policies including general competition policy, NTT-related matters, interconnection issues, and universal service provisions, supporting informed decisions regarding mobile phone services and SIM lock removal.
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