This study aimed to measure effectiveness of information technology in offering the quality of information to the user of smartphones (smartphone under focus). For this purpose, the researcher revealed a study of 259 smartphone users in Saudi Arabia as a sample. Non probability data collection technique was applied. Collected data was analysed by using SPSS software. The technique that followed was the ANOVA test. In addition, the researcher found that there was a strong relationship between quality of information and smartphones to improve effectiveness of information technology. Moreover, there was a strong relationship between using smartphones and its consequences on supporting knowledge and information to the users. The results have been discussed in light of previous literature. Keywords: Smartphone, Communication, Learning, Knowledge Management, Information Technology, Information Quality, Information System.