This document compares different mobile platforms based on analytical and practical approaches. It analyzes factors like the platform owner, technical specifications, development environment, license and revenue models, portability, features, hardware limitations and more. It then discusses practical considerations for users like popular features, ease of use, and learning curve. The document outlines tasks to test platforms, like sending SMS, making calculations, checking email, playing videos, taking photos and more. Representatives from different platforms will then demonstrate and compare completing these tasks.