The goal of this Randomized Controlled Trial is to study the effect of mobile Application on glycemic control of type2 diabetes mellitus. The main questions aim to answer are: * The effect of mobile application on glycemic control and quality of life of diabetes mellitus patients * The satisfaction of mobile application of diabetes mellitus patients who used it Participants will be received education about diabetes mellitus and separated into two groups, intervention group(using mobile application) and control group(not using mobile application but also receive standard treatment of diabetes mellitus. Researchers will compare intervention group to control group about glycemic control including HbA1c, complications of diabetes mellitus etc. and quality of life.