The installation doesn’t require users to do much you just have to hit the ‘Next’ button on each screen.Scroll down the page, and hit the ‘Install App’ button.Head to the GBA4iOS GitHub link from your device’s web browser.The app has some pretty nice controls, lets you change game speed and supports saving up to 128 games states.
Apple’s App Store policies are a bit more stringent but now, there is finally a relatively easy way of getting a GBA emulator on any iOS device, even if it is not jailbroken! With GBA4iOS, your iPhone becomes capable of running any Game Boy ROM. There are a few Game Boy emulators available in the jailbreak store as well, but on other platforms like Windows Phone 8, you can start using such emulators via proper apps available in the official stores.
Emulators are nothing new for iOS, and we have already covered a PlayStation Pocket emulator for those of you with access to the Cydia store.