How to Increase Internal Memory of an Android Tablet
Increase the internal memory of your Android tablet and then you can install many more apps and games than before. Most of the budget tablets have very low internal memory, ranging from 4GB to 8GB. By increasing the internal memory, we mean that the external SD cards will serve as internal memory and all the games and apps will directly get installed on the external memory cards.
To swap the memory you need to root your tablet and further also need root explorer software to see the Android OS files.
Get the details and other files from here