Can i make my iphone a computer screen?

Can i make my iphone a computer screen?

What do you mean? Is this a question or a puzzle!

That's very impossible to happen… So good luck if you want to try…

Something like Splashtop Remote Desktop? Search for Remote Desktop or VNC in the app store, these will let you use your iPhone or iPad as a second screen to your PC/Mac. I don't have a recommendation but have researched this a while back.