Shaking angles using gyro attitude

Hello, im working with gyro.attitude to move the camera using the device sensors. I have detected a problem with some devices, which if you stop de movement you can see how the camera moves or shakes right and left. I tested scripts like GyroAndroid (in the unity store for Android devices) and i have got the same results. I think the problem is how Unity obtain the values to calculate throw acceleration and gravity sensors. Someone could help me about it? Maybe using a smooth algorithm or something similar. Thank you