This is completely normal, and this is how every storage device in the computer/electronic industry functions. There is a difference between physical space and formatted or useable space.
Let's say you bought a 16GB iPhone.. That means the phone has a 16GB flash chip inside of it for storage.. but that's raw unformatted capacity. The storage chip needs a file system, location information/table of contents, etc., so it knows where the files are at (Storage Overhead), it also needs space for the operating system (iOS in this case).
16GB - Storage Overhead - iOS Software = ~14GB for space for you to use.
The amount of overhead used by the file system varies depending on the size of the storage - for example: A 32GB iPhone has more storage space than an 8GB (obviously), however the 32GB iPhone will consume more space for Storage Overhead simply because there is more space for it to keep track of.
Hopefully this helps clear up some confusion for you
Mod(s): Maybe this could get put on sticky for a while since there seem to be a lot of these questions/concerns popping up?
Let's say you bought a 16GB iPhone.. That means the phone has a 16GB flash chip inside of it for storage.. but that's raw unformatted capacity. The storage chip needs a file system, location information/table of contents, etc., so it knows where the files are at (Storage Overhead), it also needs space for the operating system (iOS in this case).
16GB - Storage Overhead - iOS Software = ~14GB for space for you to use.
The amount of overhead used by the file system varies depending on the size of the storage - for example: A 32GB iPhone has more storage space than an 8GB (obviously), however the 32GB iPhone will consume more space for Storage Overhead simply because there is more space for it to keep track of.
Hopefully this helps clear up some confusion for you
Mod(s): Maybe this could get put on sticky for a while since there seem to be a lot of these questions/concerns popping up?