I don't think you can enlarge the stock keyboard, however you can enlarge the Market keyboard such as the ever famous swift keyboard. Or you can alternatively flash in a keyboard that you are most comfortable with such as Thick Buttons, Big Buttons etc. These keyboards are esp made for people with slightly larger than average fingers. https://forums.androidcentral.com/e...ps/details?id=com.thickbuttons&token=L1EjHeQS