I can't seem to find any information about whether text field sizes should be at least a certain height on a high density mobile view like retina or high density android devices. I try to make my text fields and buttons at least 40px tall but that looks short in retina device pixels. Does it even matter how tall the field is as long as they can read the text being input? I want to make then fields at least 60px tall so they can fit bigger font size and so they are easier to activate but I don't want to burden developers right now as we are lacking in resources. Is there a convincing argument for making them taller?