The contact page is usually the most important page on a mobile website for the simple reason that people are often on the move when surfing on mobile devices. They need the information here and now - a phone number, one address / map etc. Below are some different examples of contact pages for mobile sites.
This page could be for a shop/boutique. It includes a telephone number, address, opening hours as well as a google map so users can quickly find directions.
An example with a page with the tap-to-call button listed first. Afterwards the address, telephone number and emails. At the bottom is a map.
This example includes only a description of the company along with a contact form module.