Reply To: i9500 or i9505 by Home › Forums › Samsung Galaxy S4 discussion › i9500 or i9505 › Reply To: i9500 or i9505 August 14, 2013 at 11:58 am #1094 simonKeymaster you need make sure your fingers are moving over the sensor. The moving also should not be too fast. (adsbygoogle = window.adsbygoogle || []).push({});