If you really have 61 out of 64 GB full, then it’s high time to clear much more space.
I recommend you get yourself a sizeable microSDXC card (go for 128 GB or more), insert it into the SD card slot and format it as
portable storage (not as
“internal storage”) as shown here:
For details see:
Once you have done this, you can move big files like photos, videos and music to the microSDXC card. Photos and videos are usually in the DCIM folder. This will take some time.
Alternatively, you can move the stuff to an external medium like a computer etc.
