Computer Help and Support

and the acronym stands for "digital camera images."

If you need to clean up that folder on your phone, I suggest using the USB cable that you use for charging the phone and connecting it your computer so that it easier to view the images and so that you can use the file explorer options to sort pictures (such as by date). That way you can select multiple images for deletion rather than having to proceed one image at a time. It will also allow you to rename any images and store them on another device. That will free up the memory on your phone for other uses such as apps you might want to download.