Abstract :
The use of mobile phones as a medium of communication is common in communities across the country. Communication links can be easily done with an almost unlimited range with menggunankan phone. Similarly, the dictionary is indispensable in suatau translating foreign languages??. This study aims to design a digital dictionary Indonesia - English and English - Indonesia for mobile devices, especially mobile phones based on Android. So only by using a mobile phone, users of the system can translate English into Indonesian and vice versa at anytime and anywhere. This is of course a useful tool in the world of education, especially in learning English. This application was built using Java 2 Micro Edition. Stages of the author to make the application development process includes stages of problem analysis and requirements, application design and application interface design, so that the application form to be easy to use and has an optimal function in translating languages. Keywords: Communication, Language, Mobile.