To mirror your iPhone's screen to a Mac computer, you can use QuickTime or AirPlay. Here's how to do both.
To mirror your Android's screen, you'll need a Chromecast, a compatible TV, or a third-party app like Tenorshare Phone Mirror.
You can do iPhone split screen multitask to use two apps on screen at once, without a jailbreak. Maybe you want to scroll your Instagram feed at the same time as playing a YouTube video. The iPad ...