Is gyroscope necessary in smartphone?

Related questions

1. What is the application of gyroscope?
2. What is the principle of gyroscope?
3. How gyroscope is used in Aeroplanes?
4. What are the applications of gyroscope?
5. How does gyroscope sensor work?
6. Why is gyroscopic precession 90 degrees?
7. What is gyroscope couple?
8. What is gyroscope used for?
9. Why are gyroscopes important?
10. Can a gyroscope work in space?

Tags

1. #linear
2. #acceleration
3. #whereas
4. #orientation
5. #measures
6. #device
7. #already
8. #relative
9. #measure
10. #accelerometer
11. #frame
12. #reference
13. #gyroscope
14. #question