The Use of Handphone in The Classroom

In my opinion the use of handphone in the class has some advantages and disadvantages. Handphone can be the solution  for us when we want to learn some material that is not in the textbook. when there is an online test, handphone can help us to do the test. Not only that, the use of handphone in the class also caused some disadvantages. The use of handphone can interfere learning activities in the class, make students lazy to learn because they stuck with their handphone, etc. So I think the use of handphone caused more disadvantages that we can reduce usage of handphone and more focus when you learn in the class