\Reasons | No WIFI or insufficient mobile traffic (1) | Oblivion or inattention (2) | Occasional downloading due to the lack of time (3) | No necessary software to open the study material (4) | Seldom going on line (5) | Mobile phone being lost (6) |
---|---|---|---|---|---|---|
Numbers | 16 | 15 | 10 | 2 | 3 | 1 |