I got a really cheap BLU Advance 5.0 here and the most annoying thing is that it constantly runs out of space. I already added a 16GB SD card but as you might imagine that doesn't solve the problem.
When I go into Settings>Storage and scroll down all the way it says:
Total space: 4.00GB Total available: 248MB System 683MB
Where are the 3000MB?
Bear in mind I have 5 apps on the phone that take up roughly 400MB.