Well, if the phone is still running on the original version of Android it came with (Ice Cream Sandwich), then you would not be able to run apps from the SD card. However, if you have upgraded to, or can upgrade to, Android "Marshmallow", then you may be able to get this to work. I say may because there is still the possibility that the manufacturer has restricted that option. They do that sometimes.
You should, however, be able to move things like your photos, videos, music, etc., over to the SD card which would free up space on the phone itself. I would also suggest copying all that (and your contacts) over to a computer so as to not lose those things.
How to turn external SD card into internal storage on "Marshmallow".
NOTE: Please...