PaleRa1n Jailbreak has grown to become the most reliable iOS 15 and iOS 16 jailbreak compatible with iOS 15.0 all the way up to iOS 16.3.1 (with iOS 16.4 support on the way). The only major caveat of PaleRa1n jailbreak is that it only works on pre-A12 devices. The jailbreak has tweak injection and supports