To Calibrate Gyroscope on Samsung Galaxy Devices do as follows:
1. Open "Setting" App
2. Find "Motion" and tap on it
3. Scroll down the menu and tap on "Sensitivity Setting"
4. Open "Gyroscope calibration"
5. Place device on a level surface and tap Calibrate
I already checked it on a i9100 device, and the instruction is the same as mentioned in the tip.
What are your options in the Motion menu?