1. Increase available Rom spaceMove the data/app apk to the system/APP, or directly Delete the data/app apk and directly Delete the APK file under the system/APP. The available Rom space cannot be increased. Remember: do not move or delete data randomly! Note: uninstalling a system file (System/APP) directory does not increase system space. Only the data/APP directory can be deleted, as follows:
We found that both the e-market and Google map have been upgraded to [available in applications], and the available Rom is small; R. e. we can see the new version of the electronic market and Google map installed in the data/APP. However, in the system/APP, the old version of the e-market and Google map that comes with Rom still [waste rom ]: so:
- Use r.e to back up the old version of the e-market in the system/APP and Google map to the sdcard [R. E. Supports read/write ];
- Copy the new version of the electronic market and Google maps under data/APP to the system/APP using R. E., and change the file name to the default [change to the old version APK file name ];
- Use r.e. to delete the relevant files under data/APP and data/DALVIK-CACHE [available Rom added; Data/DALVIK-CACHE is the cache file of the application, occupy available rom ];
- Shut down and start the instance.
2. System/APP and data/APP Permissions
- Data/APP software permissions are not fully available.
- All software permissions in system/APP are available.
- Data/APP can be uninstalled.
- System/APP can only be deleted after root.
3. System/APP and data/APP Space
- The data/APP folder size is random.
- The system/APP folder seems to have a size limit and cannot be too large. After wipe, data/APP is cleared, and system/APP is okay.
- The space under system/APP/is limited, and the storage space displayed in the settings is occupied under data. If you move the files in the data/APP directory to the system/APP directory, you must modify the permission and change the read-only permission to read/write.
4. APK file storage locationThe Android system folder structure parsing (\ System \ APP) mainly stores applications that are routinely downloaded. You can see that all files end with the APK format. The program in this folder is the default component of the system. The software you install will not appear here, but in the \ data \ folder.
