factory data reset

基本解释

Although not required, a factory data reset may be needed in order to allow your device to work at optimal levels.
尽管不是必要的，做一次恢复出厂设置可以让您的设备以最佳状态工作。
Reset to factory defaults – administrators can reset a device to its factory defaults in order to wipe sensitive data in case the device was stolen or lost
恢复出场设置——管理员可以将设备重置为出场设置，这样就能在设备被偷或丢失后擦除上面的敏感数据了
A software-based approach could protect a phone from getting wiped and reset to factory default, but it would not be as effective in protecting the user's data encrypted on hardware in the device.
基于软件的技术可以防止手机被格式化或者重设为出厂设置，但它不能有效保护储存在手机硬件里的加密数据。

If you decide to sell your device or trade it in, make sure you wipe the device (reset it to factory default) to avoid leaving personal data on the device.
FORBES: FBI Issues Android Smartphone Malware Warning
The bug allows malicious software to reset a Android to its factory default settings and permanently delete any data on it.
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