Mobile repairing Course He further said, "We have various 3-5 month long courses for mobile and laptop repair. After completing these courses, students can easily earn up to Rs 15,000 a month. Recently, lot of students has started showing interest in tablet repairing as they are latest gadget in the market." Delhi Training Institute, on an average, enrolls one student everyday and currently, it has five batches, which are taught by six faculties. Hi-tech Institute and Hi-tech Institute of Mobile Phone Technology Pvt Ltd, master franchisee of Punjab -based Hi-tech and Hi-tech, is a vocational training institute. It stated convenience of getting phones repaired in a non-dealer shop is popularizing these courses.