Javascript RegExp dosn't recognize apostrophe on mobile iOS

Question

I have a form with three input.
The first is only number and for the other two I can accept all letters from A to Z, space and apostrophe.

HTML

Answer 1

Thanks to @Wiktor Stribiżew for the help.
The correct string is new RegExp("^[a-zA-ZÀ-ÿ ‘’']{2,60}$")
I also have find this link that can help.