Youth smokers are recruited using the reactive and proactive strategies. The operation hours of Quitline service are weekdays from 17:00 to 21:00 and on weekends from 14:00 to 20:00. A questionnaire asking the smoking status, dependency level and the perceived barriers of the smokers was designed to assess the status of participants at baseline, brief counselling with the use of motivational intervention approach is delivered during the phone call.