ස්මාර්ට්ෆෝන් සමීක්ෂණය

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

  1. 1
  2. 0
  3. 1
  4. 2/tag
  5. 3
  6. 5 minutes
  7. 0.5
  8. 1
  9. 4
  10. 1