Objective: To determine the potential of providing health-related services on the Internet or via mobile phones to diabetic patients in a large city in Iran, a middle-income country. Background: Diabetes mellitus (DM) is increasing worldwide, especially in developing countries, as a consequence of urbanisation, which is associated with risk factors for diabetes such as physical inactivity and high sugar and fat diets. The use of the Internet and mobile services is increasing worldwide. Independent use of the Internet and mobile technologies by patients could be a key step towards self-care management of DM. Methods: A two-part validated questionnaire was completed by patients who attended one of two diabetic clinics for a routine check-up.