System data classes-folders related to system file storage.

1,.android_secure: official app2sd product, storage related software use certification. After deletion, the software in the SD card will be unusable.

2.Android: Store important program data, such as the map cache of google:map. The map needs to be downloaded again after being deleted by mistake.

3. Backup: contains important backup files. For example, contacts exported to an SD card will be imported into this folder.

4.bugtogo: When there is a problem in the system, some report files will be formed and stored in this folder.

5, data: cache data folder, similar to Android. For example, screenshots of the Screenshot Assistant are saved in the

In the data \. Edwardkim.android. Screenshot complete \ Screenshot.

6. Lost. DIR: The lost or wrong files on the card will be moved here, and this directory will be automatically generated if deleted.

7.systemappbackup: After the system appremove backs up the system files, save the directory of the backed-up files.

8.bugreports: When upgrading the system or updating the machine, the list of error reports compatible with the system and the program (including all contents of memory usage) will be saved in this file, which can be deleted after restarting the machine.

9..keepsafe: The addresses of hidden software and encrypted files are stored here.

10,. Thumb: The file used to record the time and content after browsing or using a software and using a folder is randomly generated and needs to be cleaned regularly. If it is not cleaned for a long time, it will occupy a lot of effective space on the memory card.

165438+

12: The files generated by the playing software when watching and playing movie programs will be stored here, which can reflect the feedback information to the producers and can be deleted.

13, Download: uppercase letters indicate the download file directory of network connection, and lowercase letters indicate the download transmission files (Bluetooth, near field, etc.) stored in the mobile phone itself. ), so don't delete it by mistake.

System tool class related folders of tools attached to the system.

1, albumart: the cache folder for music album covers.

2. Album: the cache folder of album thumbnails.

3.cmp: the cache folder of music.

4. Playlist: the cache folder of the playlist.

5.DCIM: The camera's random cache folder records the parameters set by the function and needs to be cleaned up in time. Some photos taken by third-party camera software will also be saved here, such as 360 or vignetting camera.

6. VPN: the cache directory of VPN data.

7. My documents: The documents recorded by various programs of the mobile phone need to be cleaned regularly. If they are not cleaned for a long time, they will occupy a lot of memory on the SD card.

8.nomedia: The audio and picture folders hidden in the mobile phone will be displayed here, and you can set them in the relevant folders.

9. Media: Audio file records generated by using telephone recall software or online browsing video will be saved here.

10,. Medieval _ Software: when Bluetooth transmission software is turned on, the directory where files are saved for recording tasks.

1 1, decompression: the default directory for decompression software.

Tripartite application class

1,.mobo: the cache file of mobo player.

2.QQ: QQ cache files need to be cleaned regularly.

3. QuickOffice: the cache file of QuickOffice.

4. cache switchpro:switchprowidget.

5. ucdlres: the cache file of UC Thunder.

6. Baidu: the cache folder of handheld Baidu, Baidu input method and other programs.

7.etouch: an easy cache folder.

8. Documentary: Documentary to G>>

What files can Android phones delete?

If you don't have root permission, you'd better root first. If you are not sure which files can be deleted, you can uninstall some useless software or installation packages, which takes up too much space. How big is your SD card? It is still possible to change the SD card with large memory. One is built-in and the other is external. Do you store a memory card or an external memory card? If it is built-in, it is best to change it to an external memory card. The mobile phone comes with a memory card, so a big memory card is enough. System Settings-Storage-Default Memory Card

What files can be deleted from the mobile phone?

If there is not enough space, you can delete all the ones starting with 360. And the downloaded things are also deleted. There are many pictures you received on QQ or customized expressions sent by others in the group in Tencent. If you don't care, delete it I believe this will give you a lot of space. Please try it. If it is an SD card. Copy DCIM (the photos you took are stored in this folder) and format it.

What mobile phone files can be deleted?

SD card can be directly deleted and formatted, which only affects the use of the software installed by itself. The content in the memory of the mobile phone can't be deleted at will, and it can't be deleted without ROOT and brushing. If time permits, you'd better go to the forum of your mobile phone model, compare the Chinese and English names of mobile phone programs provided by Great God, and delete them as needed!

Which folders and files can be deleted in Android phones? What can't be deleted ?

Methods of deleting useless Android applications and files in the system:

1, ROOT Android phone first.

Recommend one-button root, Zhuodashi and essence brush. After the installation, connect the mobile phone to arc, open the software, and the software will automatically detect it. Click OK and wait for completion. Upon completion, an authorization management software will be automatically installed on the mobile phone.

2. Install the file manager on the mobile phone. ES file browser (or 360 file manager) is recommended. After installation, open the software to enter the settings, find the Root settings to enter, and open the first two options (as shown). 360 authorization management will prompt you whether to allow access to the highest authority, just allow it.

3. After setting, enter the /system/app folder, and then carefully delete the useless "system programs" according to the following list. (Direct deletion is not recommended. You can move the program you want to delete to the SD card. Once there is a problem, you can move it back, and you should change your read and write permissions after moving back. Change: press and hold the returned software pop-up setting option, enter Properties-Change Permission (as shown below)-and then check Read and Write.

4. Delete useless files

The role of files in the 1.datadalvik-cache folder: When Android starts, DalvikVM monitors all programs (APK files) and frameworks and creates dependency trees for them. DalvikVM optimizes the code for each program through this dependency tree and stores it in Dalvik cache. In this way, all programs will use optimized code at runtime. This is why when you refresh the ROM, sometimes the first boot time will be very, very long. When a program (or framework library) changes, DalvikVM will re-optimize the code and store it in the cache again. After installing the uninstaller for many times, there will be many missing files, which can be deleted completely. Restart the computer after deleting, the system will automatically update the program cache, but the cache of the deleted program is gone, and the memory space has increased to some extent. Software that has not been deleted will generate these files again. So it will be slower than usual when it is turned on again.

2. Files with the suffix cache can be emptied and stored as temporary files.

3. Files starting with dots can be cleared, because this is also a temporary file.

4. Files with suffixes. Log can be deleted, this is the log file of the program.

What is the bbklog file in the mobile phone file? Can it be deleted?

Maybe you have run the mobile phone log capture tool bbk-log file, which is used to store the log data when capturing logs. If you don't need to solve the program running fault, you can delete this file.

What files can be deleted after the phone is ROOT?

Anything you don't need can be deleted (it is not recommended to delete it indiscriminately if you don't know or are unclear).

Tencent mobile phone housekeeper can help clean up.

1) Open the homepage of Tencent Mobile Manager and use garbage cleaning to clean up the garbage;

2) You can click on the mobile phone in the upper right corner to slim down and deeply clean up the mobile phone files.

This is also a complete cleaning process. There is no one-click cleaning in the new version, probably because users will delete many useful files with one-click cleaning, so this aspect has been improved.

What files can be deleted from mobile QQ?

Click on the personal avatar in the upper left corner.

Click on "My Files"

Select "Local File" in the "My File" interface.

At this point, you can see the files in My Files that already exist in the local memory. If you haven't cleaned them for a long time, there will be many. Because I just cleaned them up, there is only one doc file.

If you want to delete the file, click "Edit" in the upper right corner.

At this point, all files can be selected. Before the file to be deleted, select the "Delete" button in the lower right corner.

Click "Delete" and confirm.

In this way, the file is deleted from the mobile phone, which can greatly save the space of the mobile phone.

Of course, for the sake of safety, the files to be deleted can also be transferred to weiyun for backup.

Nothing important can be deleted.

There are too many inexplicable folders in the mobile phone. Is there anything you can delete?

Some occupy memory, some cache, and there will be some after deletion, such as some avatars in QQ. After deletion, the next login will consume traffic again.

Do not delete the files of the mobile phone itself, but some memory cards can be deleted.

You can delete some files left by previously uninstalled software.

Clean up garbage with 360 mobile assistant

It is best to use 360 mobile guards for Android phones.

If it really doesn't work, delete all the files in the memory card except the operating system, then use the mobile phone to link the computer, and use the 360 mobile phone assistant or 9 1 mobile phone assistant or QQ Android mobile phone assistant (in the advanced tools of QQ computer housekeeper) to download the required software again. Connect the mobile phone to the computer, and use the mobile assistant on the computer to download things without consuming traffic.

What can I delete from the big file of my mobile phone?

If there is not enough space, you can delete all the ones starting with 360. And the downloaded things are also deleted. There are many pictures you received on QQ or customized expressions sent by others in the group in Tencent. If you don't care, delete it I believe this will give you a lot of space. Please try it. If it is an SD card. Copy DCIM (the photos you took are stored in this folder) and format it.