Question How to Open Moblie Keyboard when touching input field

Hey, so i want to make a login system in my game using mobile device, strictly android, but when i tried to play using unity remote 5, i realize that when i touched the input field for username or password my keyboard doesn't show up, i've been searching all over but the only thing i found was this https://docs.unity3d.com/ScriptReference/TouchScreenKeyboard.Open.html

but i still cannot open my mobile keyboard, i know it's possible but there is almost zero tutorial about mobile game using unity