Hi there, I just recently purchased galaxy ace plus, the storage is supposed to be 4 gb.. but when i check from the phone setting/storage... it says USB Storage available space - 1.82 gb System storage - 852 MB where is the rest of the storage? and if i could reduce that somehow? If i download apps.. it goes into system storage.. when does usb storage gets used? And the ram says should be 512.. it shows 398Mb total and out of that used 238 mb? is there any way to reduce ram.. uninstall preinstalled apps..safe?