Mastering another language represents for people the way to get all the knowledge they want, arousing thereby the interest in learning or getting the knowledge through a foreign language. The need of communication with English speakers. Nowadays, it is important to include English teaching in educational systems of the world. This fact makes English the universal language and here in our country one of the most important languages for business, economy and cultures context.CHAPTER 1 INTRODUCTION STATEMENT OF THE PROBLEM RATIONALE GENERAL OBJECTIVE SPECIFIC OBJECTIVES CHAPTER 2 IDIOMS Meaning and definition Origin: CHARACTERISTICS AND CLASSIFICATION OF IDIOMS Characteristics of Idioms Categories of Idioms Classification of idioms HISTORY OF MOBILE APPLICATIONS Developer environment today CHAPTER 3 RESEARCH DESIGN PARADIGM TYPE CONTEXT THE PARTICIPANTS INSTRUMENTS FOR DATA COLLECTION CHAPTER 4 ANALYSIS OF THE INSTRUMENTS CHAPTER 5 CONCLUSIONS BIBLIOGRAPHY ANNEXESPregradoProfesional en Lenguas ModernasLenguas Modernas