Pixel density links
I am very fond of calculating pixel density 🙂
As such, here are some links to PPI resources:
A nice (simple) pixel density calculator:
http://pixeldensitycalculator.com/
Is this retina?!
http://isthisretina.com/
Another simple and attractive interface:
http://dpi.lv/
Old school DPI Calculator:
https://www.sven.de/dpi/
Paper Pixel Ruler
http://pediddle.net/dpi-ruler.html
Examples of sites that Google pulls resolution phone summary/data from:
http://www.phonearena.com/phones/vivo-Xplay-3S_id8248
Obligatory pixel density lists:
http://pixensity.com/list/laptop/
http://pixensity.com/list/phone/