So I have android 2.3.5 device which is NORMAL/HDPI. I have a dimens.xml in my project:
... 20sp
Because... NORMAL is NOT hdpi...Normal is mdpi (160dpi) = 1.0x.hdpi (240dpi) is 1.5x.xhdpi (320dpi) is 2.0x.xxdpi (480dpi) is 3.0x.xxxhdpi (640dpi) is 4.0x.And (last, but not least) ldpi (120dpi) is 0.75x.