How to show number only key pad without occuping the complete screen in ios device & android device

Hi, I am new to unity3d, we are building an app which contains form fill activities. The forms has so many fields to enter number, we have given the settings in unity3d to show by default number keypad when user selects the input field. But Currently the keypad is getting occupied the complete screen. Is their any option to show smaller size key pad with number only?