What is iPhone jailbreak?
It is called jailbreak to get super user permissions by accessing the internal file system of the iPhone, with this full access we can modify the device at will, from appearance to functions. This is why it is called a jailbreak, «get out of jail» by removing the limitations imposed by Apple.
The first jailbreak emerged as a method of unlocking the iPhone 2G, which was configured to work only on the American carrier AT&T, a (now famous) hacker named GeoHot appeared out of nowhere to become the first person to break iPhone security.
This method of software release was declared illegal, but the jailbreak was already much more, with your modified iPhone you could add multitasking when there was, simulate the Home or Power button when iOS did not have Assistive Touch by default, change the appearance, the fonts, colors, lock screen, add widgets …
How will you have seen many of the reasons why the jailbreak arose and why we did it are already included in iOS by default, unchanged, we can say that the alternative scene has helped to form the iPhone operating system as we know it . The improvements keep coming with interesting news with each iOS version and with each jailbreak.
Talking about jailbreak is inevitably talking about Cydia, users install and modify our iPhone thanks to Cydia, the alternative app store, tweaks and modifications that is automatically installed when jailbreaking an iPhone.
In Cydia you can find free and paid modifications, so the most daring developers can get benefits also through this alternative store.
Many users also jailbroken to hack apps, although jailbreaking is no longer necessary to install apps without paying.