Lightroom Mobile (for Android and iOS) doesn[SQ]t use files with the extension ".FLTR". That[SQ]s a file type associated with older versions of Lightroom *desktop* software. Android[SQ]s Lightroom uses its own preset system, typically `.lrtemplate` files. You might be seeing `.FLTR` mentioned in relation to websites or forums that are discussing older Lightroom desktop presets, which are

not directly compatible

with the mobile app.

To use presets in Lightroom Mobile (Android), you need to find presets specifically designed for that app, usually in the `.lrtemplate` format. These can often be downloaded from websites offering Lightroom Mobile presets or created within the app itself. You then import them into your Lightroom Mobile library.