Galaxy J3(2016) run out of space

[pipemakermike]

I have a Galaxy J3(2016) It is now reporting that it has run out of space. I have deleted everything I can all pictures, old emails, unused apps and I am at a loss to know what else to do to free up space.
when I got the phone I added a 64Gb SD card but it remains mostly unused as I can't see how to get the phone to use it to help with my lack of space problem. Is there some trick that I am missing?

[Hitch21]

The memory cards are only used for pics,music,videos etc not apps which is bad feature with this model my partner had the same problem

[el21]

I had a Samsung J5 and had the same problem. If you have a memory card you can transfer your pictures and videos in your gallery. Also go to your apps list, press on storage and clear the cache of big apps. This will definitely clear some space.