What are the advantages and disadvantages of Apple's 4s jailbreak?

Jailbreak refers to opening the user's operation authority, so that the user can erase the running state of any area at will. Only after the successful jailbreak can the file system of iphone be in a read-write (rw) state, and third-party programs and plug-ins without official certification can be installed and run. ?

These softwares were either rejected by Apple Store for some reason (usually because they violated Apple's rules and regulations), or the developers didn't have a MAC system, or the authors refused to pay $65,438+000 to publish their works. After jailbreaking, you can use these softwares. ?

The biggest difference between iPhone's iOS and other mobile phone systems (such as Nokia's Symbian and Google's Android). ) that is, the latter two are open user rights, while the iOS user rights are extremely low. Simply put, the user rights of the latter two are RW (read and write), while the user rights of iOS are only R (read only). Therefore, users of iOS can only use Apple-verified applications (purchased in the Apple Store), and other behaviors cannot change the system. The advantage of iOS is that compared with other systems such as Nokia Symbian and Android, it does not need jailbreak, is extremely stable, and has extremely low death probability.

Comparison of advantages and disadvantages of jailbreaking or not;

First, don't run?

Advantages:?

1. The system is relatively stable. ? 2. Save electricity. ?

3.3. The software downloaded and installed by Apple Store has strong compatibility. ?

4.4.apple store (ipa format) downloads and installs the software, and will not leave redundant system junk files after deletion.

Disadvantages:

System permissions are very low. For example, we can't delete system programs, modify system files and settings, encrypt a program, send files with Bluetooth, use third-party input methods, etc ... and third-party software can't be realized. Why? Application developers want to put on the APP Store, and their works must also be approved by the Apple App Store. ?

System-level software such as incoming call, SMS display attribution, SMS receipt, flash, etc. can never be realized without jailbreaking on iphone. ?

Only free programs or software downloaded from the App Store can be installed (China usually buys gift cards or black cards and redemption codes from Taobao). Unable to install the cracking program (software without account certificate, such as cracking. ipa，pxl，deb)。

Personalized programs such as theme, icon and SMS ringtone cannot be changed.

You can't use your mobile phone to download files directly in the browser and manage files on your mobile phone.

Advantages:?

1. The system is relatively stable. ? 2. Save electricity. ?

3.3. The software downloaded and installed by Apple Store has strong compatibility. ?

4.4.apple store (ipa format) downloads and installs the software, and will not leave redundant system junk files after deletion. ? Disadvantages:?

1. System privileges are low. For example, we can't delete system programs, modify system files and settings, encrypt a program, send files with Bluetooth, use third-party input methods, etc ... and third-party software can't be realized. Why? Application developers want to put on the APP Store, and their works must also be approved by the Apple App Store. ?

2. System-level software, such as incoming calls, SMS showing the place of origin, SMS receipt, flash, etc. Without jailbreaking on the iphone, it will never be realized. ?

3. Only free programs or software downloaded from the App Store can be installed (China usually buys gift cards or black cards and redemption codes from Taobao). Unable to install the cracking program (software without account certificate, such as cracking. ipa，pxl，deb)。 ?

4. Personalized programs such as theme, icon and SMS ringtone cannot be changed. ?

5. You can't use your mobile phone to download files directly in the browser and manage files on your mobile phone. ?

Second, after the prison break

Advantages:

The system has high authority, so you can optimize the system and modify the system files by yourself. You can install more software with high system authority and realize more advanced functions! For example: sending files with other devices via Bluetooth, SMS receipt, call attribution, call answering vibration, file management, browser downloading plug-ins, flash plug-ins, content management, etc.

You can install free programs or crack and charge programs.

You can change the theme, icon, SMS ringtone and so on. Create a personalized mobile phone.

You can flexibly manage the system or other files with the help of third-party file management software. Think of the iphone as a removable hard disk (USB flash drive). ?

Disadvantages:

It needs electricity. After jailbreaking, the system will always keep some processes in jailbreaking state. Depending on the number of installed system-level software (deb format), in some cases, the power consumption speed will increase by about 10% ~20% after jailbreaking. Note: Never install software in pxl format (for example, most of 9 1 mobile assistants are software in pxl format).

This may lead to system instability. With high system authority, we are also in danger of system crash. Can you understand this truth? It can be revised, but it cannot be guaranteed to be corrected forever. Therefore, it is better to have system-level software than to abuse it. If you don't understand the purpose, don't install it indiscriminately.

When the new mobile phone firmware version comes out, don't update it in time unless you back up SHSH with a mini umbrella. Because every new version of firmware will fix the jailbreak vulnerability of the previous version, jailbreak will be invalid. And Apple's iOS firmware can only be upgraded, not downgraded. Therefore, if you still need to maintain the function after jailbreaking, it is best to wait until the new jailbreaking program is released, and then formally upgrade the corresponding mobile phone firmware version.

Small bugs are generated in the process of jailbreaking, but it has no effect on normal use.

Third, * * * similarities.

It won't damage the hardware, and jailbreaking won't change the hardware on any mobile phone.

Free or paid software downloaded from the apple store can be installed without being affected.

Note: Prison break is risky, so be careful.

PS: These are the most professional. I hope the landlord will give me favorable comments and adopt them. Thank you!