Android Hacks - Dual-Boot iOS on Your Android Phone
The Gadget Hacks team has built a simple one-tap mod that allows you to dual-boot iOS on your Android phone right from your browser by utilizing a mobile-webkit buffer overflow, and taking advantage of the fact that both Android and iPhone CPUs use the same ARM instruction set. Using the same techniques, we've also built a way to dual-boot Android on an iPhone. Visit AppleHacks.com from your iPhone for that mod.
Android 4.0 or higher (yes, even Lollipop!) 1 GB of free storage space It's Safe:
No root required 100% reversible (as easy as uninstalling an app) None of your existing data will be touched (no need to reinstall apps or contacts)