What is Hall sensor in smartphones?

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Tags

1. #proximity
2. #output
3. #effect
4. #based
5. #presence
6. #sensing
7. #human
8. #magnetic
9. #voltage
10. #sensor
11. #speed
12. #phones
13. #sensors
14. #positioning
15. #response
16. #mobile
17. #detection
18. #applications
19. #current
20. #varies
21. #switching
22. #field
23. #transducer
24. #detect
25. #these