Mobile phones as a symbol of electronic century and digital world has spared worldwide especially in youth (1, 2). Subscribers of mobile phones were increased from 12.4 million in 1990 to 500 million in 2000 to 3.3 billion in 2008 and 5.3 billion at the end of 2010 (3-6). Estimations show that the prevalence of mobile use will be increased to 95% till 2013 (2). In Iran Subscribers were increased from 4.3 million in 2004 to 41 million in 2008; it is estimated that about 53 – 55 million are subscribers of mobile phone in Iran now (2). Communication technologies (that causes to higher level in quality of life) have several benefits in our modern life; but we can’t disregard some negative effects of mobile phones that caused serious social and cultural problems in communities (2). This study tries to detect the attitude and practices among students of Yazd University of medical sciences were living in dormitories about using mobile phones.