Just for context, here is my phone. It is now a $100 phone (no contract.)
http://www.phonearena.com/phones/Kyocera-Hydro-VIBE_id8641
It's screen is qHD (540*960.) Its diagonal is 4.5 inches. It's PPI is 245. Now look at its PPI rating. That is considered low pixel count for today's standards.