How to use my macbook pro to screen record my Iphone IOS 9.3.2 without jailbreaking it for free?

How can I use my macbook pro to screen record my Iphone IOS 9.3.2 without jailbreaking it for free? I tried quicktime but it always said something like USB taking up to much space or just didn't work at all.

Recording as a Movie with QuickTime should work. How much space do you have available on your hard drive? It needs plenty of space to buffer and store the incoming video which may be your problem.

https://support.apple.com/...b/HT201066