Displaying numbers on iPhone keyboard

miramm wrote:

I need to show numbers on keyboard

If you want them on the top level, you need to get a different keyboard from the app store. Have a look at Swiftkey, Bullkey, Number Row Keyboard, Fleksy, My Keyboard Custom Keyboard.

On the keyboard, look at the bottom left and see the 123 button. Tap it and you'll get numbers.