I am getting "No space left on device" errors from Photos and other apps on my iPhone 11 Pro Max 256GB.
When I checked my Photos app, it showed unable to update due to no space left on device. When I tried to add a book to Books, I got a similar error. The only problem is, my phone shows only 76GB of 256GB used. This also happened on my older iPhone 8 Plus with 256GB.
iPhone 11 Pro Max