Data in memory and SD card is different for the same application.

Test procedure]
1. Download an application and open the application;
2. Press menu to open the management applicationProgramGo to the SD card and click "application" to view the data moved to the SD card and to the mobile phone memory.
Expected results]
1. The data transferred to the SD card is the same as that to the mobile phone memory.
[Actual results]
1. Data transferred to the SD card and to the mobile phone memory are different.
[User impact] affects memory usage.
[Problem probability judgment basis] Conditional reproduction is inevitable.

 

The same application is moving to the SD card and to the mobile phone memory.
One of them is "data"
"Data" moved to the SD card is 4 k more than the "data" moved to the mobile phone memory

 

It seems that there are two different implementation mechanisms.
The application is installed in the mobile phone memory. Only the APK is installed under data/APP/, and the data (LIB/DB, etc.) is stored under data /.
Installing the application to the SD card requires an encryption process. Because the SD card is readable and writable, without encryption, the user can easily damage the application data (the data zone is read-only ). When the application is installed on the SD card, data is stored in MNT/ASEC, and APK is converted to an ASEC file and stored in MNT/secure/ASEC.