Samsung Galaxy R is a great gaming Android Smartphone, sporting a Tegra 4 chipset, the device gives an excellent gaming performance. Though Samsung Advertises that it has a 8 GB internal storage, after all bloatware you get only effective mere 3 GB for your use. This is very less considering the size of games like GTA vice city which are higher than 1 GB.
Here is a method to swap the internal storage with an external SD card. Since SD cards can be up to 32 GB swapping the internal storage is a huge advantage. Follow the instructions to understand this process.