So I bought this S4 with 16GB internal memory.
I think I am confused...most phones come with a GB or two of "ram" and some level of internal memory. How is that internal memory different from an sd card? Can I put a 64GB sd card in the S4? And still have the 2GB ram and the 16GB internal memory?
Can the internal memory be upgraded?
I think I am confused...most phones come with a GB or two of "ram" and some level of internal memory. How is that internal memory different from an sd card? Can I put a 64GB sd card in the S4? And still have the 2GB ram and the 16GB internal memory?
Can the internal memory be upgraded?

an S4. I believe it called the internal storage Sdcard and the external is ExtSdcard. Not sure if that is confusing you also.