Devices with a capable CPU (armv7a and NEON support) e.g.
Samsung Galaxy S2 or newer
Nexus 4 (2013) or newer
Nexus 10 (2012) or newer
I am sure about the OS version. I also checked the range of PPI defined in the Android Documentation. However some midrange devices here in the Philippines seem to be low on screen density.
Rivera.migueld