According to Crescente and Lee
According to Crescente and Lee (2011) The definition of M-Learning or Mobile Learning, has many different meanings for different communities, that refer to another tools which is educational technology, E-Learning and distance education that is focuses on learning across environments and learning with only using mobile devices. Besides that, mobile learning has various different meanings and is has many different names such as U-Learning, M-Learning, personalized learning, learning while mobile, anytime and anywhere learning, and handheld learning. One definition of mobile learning is, “any sort of learning that happens when the learner is not at a fixed, predetermined location, or learning that happens when the learner takes benefit of the learning chances offered by mobile technologies”. So, with the use of mobile devices, learners can learn anywhere and at any time. Mobile learning is considered to be the ability to use mobile devices to assist teaching and learning.