Many complain about Android, especially in low end devices which comes with limited memory available to install applications. And this complaint is quite justified. If I have a phone of 512 MB ??of space, why really I have only 100 MB to install applications? Why does it say that in the internal memory is only 192 MB of space?
The key to all this are the partitions. Internal storage for Android is divided into multiple partitions, and we can use only that which is reserved for data, which also has to live with all the space used by applications to store data and also the operating system. We will see in detail what these partitions are.