[XDA Assist] joaocarlos1:
I was fiddling with the Folder Mount application trying to move a game to my memory card, but I could not because I did not know how to play the app right. After a while I noticed in the Task Manager of my device that the internal memory filled suddenly, out of nowhere, and look I did not have much, there was 4.00GB / 4.00GB, that is, everything busy. But looking at other configurations of the cell phone, there was 1.0GB / 4.00GB, which was the memory previously occupied. (In the second image appears total 2.4GB, but it is because 1.6 is dedicated to the system and the configuration only shows usable size)

[IMG="Here is the image of the situation described above"]https://rm95eq.bn1304.livefilestore.com/y3maVJ8gOe71hIYUns7m_pBXtPEx1jNrjnABRNW0FJ331T3WPhg74cDHFWseMHZmf4OSpD7ZLazUSa_GD7yu7A1IVWrnEW8J11OU1X3iiN26zS0EGcv8ka0r2Q8XHxEndkn113Xl-d-jd9kfnW2yHEj02yCOMV6qJblRzSOovGYxL4/foto1.jpg?psid=1[/IMG]

To test whether or not it was full, I tried to install some test apps through the playstore, and it worked, apps were installed and worked normally. But I tried to download a WhatsApp media and I could not, there was "Insufficient Memory" (or something like that); I tried to print a random screen from my cellphone and it showed "Full storage"; I tried to download a song through an app and also could not because the memory was "full". I went to look in the native File Manager of the phone in the /storage/sdcard0 folder which is the internal memory folder and there was absolutely NOTHING, but the apps that were installed on my phone in the internal memory were running normally even the folder being without any file. I checked the folder through the Root Browser and there was nothing inside either. So I decided to FORMAT THE MOBILE, to see if that would all be redefined. But after formatting, nothing changed, of course I lost the applications, media, files but the memory still indicated 4.00GB / 4.00GB and this with my cell phone FORMATTED, that is, without any app besides the natives.

I downloaded the Link2sd app that manages these things from external and internal memory and when I went to look at the storage information (which shows the free and busy space), there was /storage/sdcard0 and below a bar on which below was written "mounted" there I thought, "This must have some connection with the Folder Mount app, I did not know how to handle it, I tried it, I ended up destroying everything."

I connected the smartphone to the PC through a USB cable, and opened the folder with the storage information of the device with Windows explorer and look at the print as the internal memory appears; Note that the sd card normally shows free and busy memory, but the internal memory appears a very strange number, and the bar that shows the storage appears as if the memory is clean.[IMG="See how the internal memory appears; Translate: livres = free;;; Espa�o usado = used space;;;; Espa�o livre = free space"]https://qqpzkg.bn1304.livefilestore.com/y3mfeobKzbimI2C-N0kuH9Qfpkb3-RBV8mSr_GYyt9wwyWuC3Iu7xh04ftfr82NtG5_91UCzsnum7EupzFrZ_B4wu2cRaCVlASfAfcviSAWToCVS-f5AJWPTmF83nWlEV8nYGRRl8p9G6Th5IkY4PkSH-Uey80jZtTXt8IBLCKvwio/2016-12-09%20%285%29.png?psid=1[/IMG]

I do not know what happened, but if someone who understands android knows what is happening and knows how to solve it, please help me. Below is some information from my device

Brand and Model: Samsung Galaxy Trend Lite Duos GT-S7392L

Android version: Jelly Bean 4.1.2

Internal Memory: 4.00GB (1.6GB dedicated to the system)

External Memory: 32.00 GB

Root access: It has

RAM Memory: 512 MB