What is a .THUMBDATA3--1967290299 file?
A .THUMBDATA3--1967290299 file is a special kind of data file that is made by the Gallery app on some Android phones, like the HTC Desire SV and Sony Xperia. This file helps the Gallery app work faster by keeping track of all the small preview pictures, called thumbnails, that you see before opening the full-size images. These thumbnails make it easier and quicker for you to browse through your photos in the app.
The .THUMBDATA3--1967290299 file is saved in a hidden folder on your phone named .THUMBNAILS. Normally, you can't see this folder because it's hidden. However, if you change your phone's settings to show hidden files and folders, you'll be able to see it.
To open or work with a .THUMBDATA3--1967290299 file, you don't need any special program other than the Gallery app that comes with your Android phone. This app automatically creates, updates, and uses the .THUMBDATA3--1967290299 file as part of its normal operation to help your images load faster when you're looking through them.
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