Use iPhone on external screen with multi-touch
AFAIK, this is definitely not possible. The closest thing to what you're describing would be AirPlay. However, AirPlay requires a newer Apple TV connected to a TV; it wouldn't work on an iPad or a Mac, let alone some cheap old Android tablet. Additionally, even if it were currently possible to mirror the display of your iPhone onto an iPad, that's all it would do is mirror the display of your iPhone; it wouldn't be able to respond to multi-touch.