Jailbreak is a wonderful opportunity for Apple users. It removes all the unnecessary barriers that were imposed by Apple. So after jailbreak your iOS, it is possible to download and install third-party facilities. Jailbreak is not necessary. But through iOS jailbreak, it is possible to get superuser freedom with super admin powers.
There are several facilities that come with jailbreak. Those are easy to remove default apps, install unofficial apps, speed up device memory, increase device performances, increase device efficiency, no restrictions, no limitations, and many more.