What is a hidden menu on a android?

Related questions

1. What is gyroscope on Android phones?
2. Is Vivo a v5?
3. Is VR box compatible with all phones?
4. Can we install gyroscope in Android?
5. How many sensors does a mobile have?
6. Is Vivo a v5 4g?
7. What is use of gyroscope?

Tags

1. #android
2. #standard
3. #phones
4. #secret
5. #future
6. #versions
7. #experimental
8. #called
9. #google
10. #phone
11. #access
12. #system
13. #check
14. #might
15. #features
16. #allows
17. #hidden
18. #could
19. #tuner