Over-the-air technology which download the data of EMS memory and SIM card in mobile station through the air interface of mobile communication present a solution to these challenges.

空中下载技术是一种通过移动通信的空中接口对移动终端内存及SIM卡数据进行远程管理的技术。

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The program can backup all contacts from the mobile phone memory to SD card, it also can restore the data to mobile phone memory from SD card, including the data backup from SIM card.

备份手机中所有重要数据：包括通讯录、通话记录、短信、彩信、电子邮件、日程、文档、图片、视频、音频等多媒体信息，还包括程序等全部文件。

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That chin is removable, and hides the phone's SIM and microSD card slots (this might be a good time to remind everyone that you won't find a memory card reader on the 8X).

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