How to test if gyroscope is working on the Samsung Galaxy S5?

I've had my Samsung S5 for almost two years but for at least the last 6 months, the auto rotate hasn't been working. I did a test on the gyroscope which failed. What can I do to get this fixed?

Try one of these apps I found to for testing Gyroscope on Android:
- Sensor Kinetics (link)
- Z - Device Test (link)
- Gyroscope Explorer (link)

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