Unity UI Scale for iPhone

I have some UI elements in my project. It looks great in unity and Unity Remote 4. But when I build the project and run with xcode, the elements looks very small. I can not even touch the buttons. And texts become unreadable.

How can I set the UI elements responsive all devices?


In Canvas Scaler component,

→ Set UI Scale Mode to Scale With Screen Size from Constant Pixel Size
→ Set value of Reference Resolution accordingly