As a UX designer, you should think about how you would confirm user actions on every interaction. For example, while filling in a form, you can confirm that the data in every field is correct (inline validation). It’s not only about showing errors, but also about building confidence that everything is going well.
The second thing associated with the form is showing the appropriate keyboard. It’s a simple thing, but very important for the user!
Design inspired by one of the mobile conversion rate optimization techniques from the report: https://bit.ly/2T4aKga