Since August 2015, all the smartphones of the Galaxy series are categorized in the following way: The model number of Samsung Galaxy devices will indicate the variant: * GT-Nnnn0 - mainstream Note model (Old type of model number) * SM-Nnn0 - mainstream Note model (New type of model number) * GT-Pnn00/10 - mainstream Tab model (Old type of model number) * SM-Tnn0/1 - mainstream Tab model (New type of model number) * GT-Snnn0 - mainstream model * GT-Snnn2/ SM-Gnnn/DS / SM-Gnnn/DD SM-Gnnn2 Dual-SIM "Duos" model * GT-Snnn5/GT-Nnnn5/GT-Pnnn5/GT-Innn5/SM-NnnnF/SM-Tnn5/SM-GnnnF - 4G/LTE model