When creating a mobile design, how do you deal with input fields?

"When creating a mobile design and developing the input fields, the criteria I use are to empathize the important input elements and minimize features that are not critical or distract the user. I accomplish this by using clear labels, graphics, prompts, and default keypads based on the type of information the user is imputing. An example of this is defaulting to a numeric keypad when the user is asked to enter their phone number or area code. I also provide previews of standard information the user has already entered into other parts of the application, allowing them to quickly create the entry."