I have an Android smartphone and would like to understand what is the difference between RAM, SD Card and Device Memory. When I check Memory Usage of my smartphone, I see those components:
RAM: 174 used and 52 MB free
On SD Card: 492 MB used and 3.16GB free
Device Memory: 143 MB used and 47 MB free
I understand that "SD Card" is some external memory that you put in the Smartphone. But how do I understand RAM and Device Memory?