Google's Nexus phones are almost as anticipated as Apple's iPhones are. Google offers much better internal specs with every new version of the phone, newer... Specs Comparison The Nokia Lumia 520 runs on Windows Phone 8, whereas the Nexus 4 funs on Android 4.4.2; 4.4; 4.3; 4.2.2; 4.2.1 and 4.2. The