The diagonal display of 5.1-inches makes Samsung Galaxy S6 to be a better choice over Lumia 920 with 4.5-inches diagonal display. Yet, both the phones offer hassle free performance as Lumia 920 uses Qualcomm MSM8960 processor and Galaxy S6 uses Samsung Exynos 7420 processor. To offer best experience to users, Lumia features Windows 8.1 operating system and Samsung runs on Android 5.0. Yet, Lumia 920 is restricted to 32GB built-in storage and 1GB RAM while Galaxy S6 features 32GB, 64GB and 128GB built-in storage with 3GB RAM. To offer the best experience to users, Samsung S6 offers 16 megapixel rear camera while Lumia comes with 8 megapixels rear camera. Though Samsung S6 offers some of the high-end features , it is exhorbitantly priced making Lumia 920 a good option for people with moderate budget.