Hi,
I have a very strange behavior on an iPhone SE (1st gen, 32 GB, iOS 15.5). It was overloaded (less than 1 GB free remaining). After trying many things unsuccessfully to free up memory, I decided to Erase All data and set it up as new device, so without restoring it from a previous backup. After that reset, it has now about 21GB of system data and only 2 or 3 GB free. I have erased it multiple times... Same thing... Nothing has been installed on the phone after the reset of course.
The strangest thing (IMHO) is that if I connect the phone to my Mac, Finder says that I have 22 GB of free memory and doesn't see the 21 GB of system data. But if I try to upload some big files on the phone transfer stalls after 2 or 3 GB... Is there any chance to purge those system data ?
Hope I can find help on this...