The first is the difference between booting and booting with a computer. The second is whether we can take advantage of cydia's differences. If you want to escape from prison perfectly, you can open cydia and install the cracking software. An imperfect cydia will be a white icon that cannot be opened.

IPhone can get a lot of permissions after jailbreaking, which can be divided into perfect jailbreaking and imperfect jailbreaking.