Why doesn't iPhone use antivirus?
First, restrict the entry of malicious programs.
1, there are few interfaces on the mobile phone, and the iPhone needs supporting software to connect to the computer, so the cost of malware entry is very high.
2. Simplification of the whole system, including code and application, can reduce the probability of being attacked.
3. The use of signature mechanism can ensure the credibility of files running in the system.
Second, limit the play of malicious programs.
1, authority management, which limits the application authority, thus protecting the important process of the system.
2, sandbox mechanism, the application can only do related operations in its own file system, and can't access and operate files at other addresses at will.
Third, the software of the merchant strictly controls the audit.
Apple is a closed system, and downloading software is limited to the App Store. All the software on the shelves needs to be strictly reviewed by Apple before it can be put on the shelves, which greatly reduces the chance of virus infection and puts an end to some malicious software that is arbitrarily charged. Apple will also strictly restrict the right to use the iPhone and cannot install unauthenticated software.
Four, can't open the exe format program.
In addition, in terms of format support, Apple has also stopped most viruses. For example, the program file in *. Exe format can't be opened on iOS, so even if your computer has a virus, it can't infect your iPhone.
The source code and program algorithm of iOS system are unique to Apple and are not open to any third party. IOS system is vertically associated with MacOS/WatchOS, data encryption, and the third party is denied access to the system directory.
But in recent years, mobile phone virus infection has become less and less, mainly because of our safe environment. For example, with the rapid development of security technology, programming pays more attention to security, users' security awareness is improving, and legal restrictions make fewer and fewer people make malicious programs.
The closure of IOS system, the strictness of APP software, the control of software permissions, and the removal of viruses carried by external extended memory have enabled Apple to establish a relatively safe environment, and Apple mobile phones no longer need anti-virus software.
Generally speaking, Apple doesn't need an iOS antivirus program because it doesn't leave room for viruses, and these viruses can't get into the system. But it can't be said that the iOS system is 100% safe, so we still need to pay special attention in our daily life.
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But you said that iPhone doesn't need system cleaning, which is impossible. In the process of using the APP, you will still see a cache in APP general-settings-cache cleaning ~ ~