The Sidekick data outage of 2009 resulted in an estimated 800,000 smartphone users in the United States temporarily losing personal data, such as emails, address books and photos from their mobile handsets.
2009年Sidekick數據丟失事件导致约800000名美国智能手机用户暂时失去个人数据，丟失的数据包括他们的行動電話中的电子邮件、通訊錄和照片。