プリペイドで勝手に支払いも！ 子どものスマホ課金どうするべきか？ – 週刊アスキー
プリペイドで勝手に支払いも！ 子どものスマホ課金どうするべきか？ 週刊アスキー
知らないうちに子どもが課金をしないようにするためには、どうすればいいのだろうか？
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