ස්මාර්ට්ෆෝන් සමීක්ෂණය

How long do you use your smartphone for lecture and study-related activities per day?

  1. 1-2 hours.
  2. 1
  3. 0.5
  4. 0.5
  5. 2
  6. 0.5
  7. 0.5
  8. 24
  9. 1
  10. 1