What is the sampling frequency of the accelerometers embedded in Android smartphone?

Question

I'm looking to know the sample frequency of smartphone, and - more important - if this parameter is equal for the most types of Android smartphone.

I know that there are two mode of sampling: low at 20 Hz and standard at 100 Hz. But yesterday I've done some experiment with several type of smartphone and the "Samsung Galaxy Note 3" seems has a sample frequency of 200 Hz.

Now, my question is: is it true? And, if yes, do you know where I could find one, or more, academic papers, or technical data sheets, about this issues?

Thank you in advance,
Giacomo Alessandroni

Answer 1

A small googling found Cochibos work on the subject. It takes the data gathered with the Accelerometer Frequency app and reports it to the web page.

Looking for were the actual sample rate is defined it seems to be intrinsically connected with the device driver. I.e. the device driver sets the maximum sample rate as shown in this paper. As the source code to the device drivers of commercial phones seldom are released it will be hard to find any reliable sources.