Going to the main difference between Samsung Galaxy R and Samsung Galaxy S II, that is the Display Screen. the Galaxy R features slightly smaller display than the Samsung Galaxy S II, measuring 4.2-inch, where Galaxy S II with 4.3-inch, but features the same Resolution as 480 x 800 pixels.
Samsung Galaxy R integrated with a Super LCD Display, but Galaxy S II with Super AMOLED Plus Display. Galaxy R powered with a Powerful Dual-core Exynos CPU and on Samsung Galaxy S I you can find an nVidia Tegra 2 dual-core Processor. Going to the Camera, Samsung Glaxy R and Galaxy S II with 5-Megapixel Camera with 720p HD Video Recording, and on board you will also find WiFi, GPS, FM-Radio and both Having an 8GB internal Memory storage, can be expandable upto 32GB with External Memory Card Slot.
The Samsung Galaxy R is sligtly heavier than the Samsung Galaxy S II and it features a metalic back cover, but no details about the Price, but cheaper than the Samsung Galaxy S II.
