- Motorola Droid (854x480, 265 PPI)
- Nexus One (800x480, 252 PPI)
- 300 PPI is typically regarded as the limit of useful pixel density, and the iPhone 4's mark of 326 is among the best available on any display.
IPS technology: Speaking of OLED, Jobs referred to the IPS-based (in-plane switching) LCD screen used by Apple "Quite a bit better than OLED." That remains to be seen, but in general OLED will produce higher contrast, by virtue of its ability to display a darker black,.