What exactly is the device memory and can see it 's contents?

Question

I'm using the Sony Xperia L (no root, Stock OS) that shows me that I have 1.52 GB of device memory. "Applications and Media" are taking ~ 0.98 GB and 240 MB are left free. I do not understand where all that memory is gone. So what exactly is this device memory? I have read that it is "the memory installed Android Apps". That does not answer my question because I'm trying to get a better understanding of the lack of space here and just have installed applications. So, does anyone know:

1) What is the location in the internal memory, which is considered as Memory Device? I mean that is a folder?

2) How exactly does one go about calculating Android that "Applications and Media"

3) Is there any way to see the File / Folder content of the device memory?

If we go to Settings > Storage, we have a section called Device memory. Here is a screenshot of my phone.

Notice how the space not add break here.

Answer 1

After much searching around trial and error I came across the answer to this.
1) What is the location in memory that is regarded as the device memory? I mean that is a folder?
Yes. Memory Device is calculated from the data in the current folder in the root.

2) How exactly does one go about calculating Android that "Applications and Media"

3) Is there any way to see the File / Folder content of device memory?
The device of the "Memory" includes the entire contents of the Data folder.

Applications (applications that are installed on my phone)

• Data: using these applications installed,
• Core. I still have to find out about this.
• Dalvik Cache: To be created for each application that is installed. There is a particular file that is taken from each apk installed on the phone and put here on Dalvik Cache.
• Headroom: Finally the answer to where all my free space was too. He got consumed by the way "Memory Device" is architectured. So if you install about 400 mb of applications that is sufficient to complete up to 1.5 GB of data in the folder.

I hope this was helpful. Here's a screenshot for reference.