How disable change language in number pad in iOS Objective C?

Question

I have texFiled I'm my view controller and i set number pad for that like this:

self.phoneTextField.keyboardType = UIKeyboardTypeNumberPad; 

And now i want user just can enter english number in text field(can not change language)

Answer 1

(This only applies for iOS 10 or later and for number pad)

Swift

yourTextField.keyboardType = .asciiCapableNumberPad

Objective C

yourTextField.keyboardType = UIKeyboardTypeASCIICapableNumberPad;