Files with cuid2 file extension can be often found on Android devices and appear to be related to Baidu service.

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CUID2 file extension - Baidu.cuid2 data

What is cuid2 file? How to open cuid2 files?

File type specification:

Mobile phones related file type icon Mobile phones related file type

The cuid2 file extension seems to be related to a baidu.cuid2 file found on certain Android devices in Baidu folder.

It appears to be generated by some app related to the Chinese Baidu service, but there also seems to exist a spyware called Baidu.

Can be safely deleted.

Help how to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

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