.thumbdata3--1967290299 and .thumbnails are cache files for cameras and pictures in the Android system. This file generally takes up a lot of memory, a small one of several hundred M, and a large one It is about 1.5G~7.5G, and this file will expand without limit. Even after deletion, it still reappears. It is indeed a problem that troubles users. It can be said that this is a design flaw in Android 4.0 and above systems, and it is a troublesome bug. Android system engineers have not yet given a specific solution. Mobile phones with similar situations include Xiaomi, MX2, MX3, Xiaojiao, Lenovo, Huawei, etc.
Solution:
Use the cmd command on the computer to create the corresponding file and then replace the original "oversized" file to create a new .thumbdata3--1967290299 (replaced by B below (this name) file method:
1. Enter CMD command line copy con .thumbdata3--1967290299 in the start menu and press Enter.
Then there is a cursor flashing on the screen, indicating that you are waiting for you to enter the content of the file. If you want to create an empty content file, enter nothing here. At this time, press the ctrl Z key and press Enter. A corresponding empty file with the file name .thumbdata3--1967290299 is generated.
2. cd.>.thumbdata3--1967290299 and press Enter. cd. means changing the current directory to the current directory, and there will be no output from this command. > means writing the command output to a file. Followed by .thumbdata3--1967290299, an empty file with no content is created.
Then enter .thumbdata3--1967290299 in the search bar to search for the file you want. After finding the file, change its attribute to read-only.
The last thing to do is to connect the computer and mobile phone, open the .thumbnails folder under the DCIM folder in the SD card, and delete the entire original oversized
.thumbdata3--1967290299 file inside , and then copy the entire newly created .thumbdata3--1967290299 file (0KB size) to the .thumbnails file.
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