2018年のモバイル業界を振り返る（12月編）：ソフトバンク・Y!mobileが大規模通信障害／PayPay祭り（ITmedia Mobile） – Yahoo!ニュース
2018年のモバイル業界を振り返る（12月編）：ソフトバンク・Y!mobileが大規模通信障害／PayPay祭り（ITmedia Mobile） Yahoo!ニュース
2019年を迎えました。今年もITmedia Mobileをよろしくお願いいたします。 さて、怒.
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