The internal memory is quite full, and i don´t have cash to bay a new cell. I´m thinking in a way to gain some extra space. You guys think is it possible?
If you are running out of storage space, which is very different from running out of memory, you can use an SD card to store you music, pictures, videos, and documents. Your apps really ought to stay on the internal storage.
That said, some apps that use lots of data storage will let you pick the SD card to store their extra data. Most don't allow it though.