The Android-running Nexus 4 (left) and Windows 8-running Lumia 920 both sold out on Black Friday.

Windows and Android fans raided online retailers today as the official holiday shopping season began. High demand for the newly-released Nokia Lumia 920 phone made Amazon sell out. The Windows 8-running Lumia 920 has 8.7 megapixels and a dual LED flash.

Meanwhile, Google saw a huge increase in sales for their 8-megapixel Nexus 4 after they posted a deal selling it for $199 with a 2-year contract from T-Mobile. Customers flocked to the T-Moblie site, causing them to sell out in just hours after Google posted the deal.