English has become a compusory subject at most school. Therefore, we need to have the right ways to learn it. And smart phone are a great tool for our English learning. Thanks to connecting with internet, it is easier to look up vocabulary, grammar which we do not know. Beside, we can also dowload applications that support for this and use without internet. Watching movie in Enghlish help us improve reading and listening skills. By this way, we not only relax but also learn new words. Especially on the smart phone, there are many apps that support self-study of English. Example 4English. With just a few simple steps, we can log in anytime, anywhere to study. Some apps can recognize our voice and guide appropriate video lessons or practice with native speakers. Not only that, rich content repository, regularly updated new knowledge to help us easily absorb from grammar exercises, sentence structure to vocabulary, communication ... at all levels, from basic to advanced . In addition, some applications also design games to reinforce and enhance knowledge to helps us more comfortable in the learning process. The smart phone is a great tool for learning English if we know take advantage of it.