Unlocking is because some mobile phone brands restrict the installation of the system. Generally, you can't brush your mobile phone if it is locked, because the brand mobile phone lock is installed by detecting the digital signature of the ROM package of your mobile phone. If it is not the original signature of the mobile phone, it will be rejected, that is, they can't brush the mobile phone. Unlocking is to bypass the digital signature detection of mobile phones. Root is the highest controller to get the mobile phone. Comparatively speaking, it is very tasteless to use a mobile phone before it has root, because in comparison, you can't ban many bad functions, such as junk applications pre-installed by mobile phone manufacturers, which will spread advertisements in the notification bar, secretly download applications, and some virus Trojan applications will directly steal your data upload. In contrast, after root, you can manage the permissions of each application through root management application, and prohibit application networking, or the two have little to do with each other. One is the prelude of the computer, the purpose is just like the activation of the computer after changing the system. The other is to get the highest authority, just like you change your computer from an ordinary user account to an administrator account, which is almost such a difference.