Android phones do not need to be jailbroken.

Mobile jailbreaking is exclusive to Apple phones. This is exclusive to Android phones.

Jailbreaking refers to taking advantage of certain loopholes in the iOS system, obtaining root permissions of iOS through instructions, and then changing some programs to enhance the functions of the iPhone and break through the closed environment of the iPhone.

Root permissions, a type of system permissions, can be understood as the same concept as SYSTEM permissions, but are higher than Administrator permissions. Root is the super administrator user account in Linux and Unix systems. This account owns the entire system. He has the supreme power and can operate all objects. Therefore, when many hackers invade the system, they have to upgrade their permissions to root permissions. Using the Windows method, it means adding their illegal accounts to the Administrators user group.

Extended information:

ROOT is a type of system that exists in UNIX systems (such as AIX, BSD, etc.) and UNIX-like systems (such as the famous Linux), which is stable and even used by servers. The only super user in Debian, Redhat, which is suitable for long-term operation and mature experience, the more popular Linux distributions such as Ubuntu and archlinux, and Android systems), which is equivalent to SYSTEM (XP and below)/TrustedInstaller (Vista and above) in Windows systems )user. It has all the permissions in the system, such as starting or stopping a process, deleting or adding users, adding or disabling hardware, etc.

Permission settings

The root user is the only super administrator in the system, and it has permissions equivalent to those of the operating system. Some applications that require root permissions, such as ad blocking, require root permissions. But the problem is that root is more powerful than the Windows system administrator and can delete most of the files in the entire system, causing the system to be completely destroyed and cannot be used again.

Therefore, it is quite dangerous to perform improper operations with root. In mild cases, the computer may crash, and in serious cases, it may even prevent the computer from booting. Therefore, in Unix, Linux and Android, it is generally not recommended to use root unless it is really necessary. It is best to create a separate ordinary user for daily use.

Security

Root has all the permissions of the system. If the root password is leaked, it is enough to cause the entire computer to be completely controlled by someone who steals the root password.

Some tasks must be performed by root, such as deleting system built-in applications. However, it is not recommended to use root in Unix or Linux systems, which constitutes a contradiction. So a sudo method was born, which is to use su to escalate privileges when necessary, that is, to grant part of the system management permissions to ordinary users, and only when these users need higher permissions, these users are allowed to temporarily use root commands. to manage the system.

By default, root's root directory (/root) is not accessible to other users, which enhances the security of the entire system to a certain extent, but not completely. The security of Unix, Linux and Android lies in its high degree of configurability. In other words, the security of Unix or Linux depends more on the system administrator rather than the Unix or Linux system itself.

The general model is: Unix, Linux and Android provide a sound security mechanism, and the system administrator formulates corresponding security policies according to actual needs and deploys these security policies. "Mechanism" refers to what can and cannot be done, and "strategy" refers to what should and should not be done. The security policies and security mechanisms of Windows are relatively confusing. Windows itself relies too much on security policies, causing system administrators to be tied up in many cases, and the gains outweigh the losses.

Reference material: root (computer technical language)-Baidu Encyclopedia