Download the Lightroom app
Use an app like Unzip to access your file
Once in the Unzip app, go into the unzipped folder and tap the .dng file and then tap “Open In…” and select Lightroom
Select “Launch Lightroom Now” if it pops up
Find the photo in Recently Added in Lightroom and open it
Tap the circle with the … in the top right corner and select “Create Preset”
Name your preset LAVENDER
The preset will be available whenever you edit photos as usual

Right click on your file and select Unzip
Open lightroom
find the preset section and select the . . . in the top right corner
Click “import presets” and select the LAVENDER .xmp file
If your lightroom is synced across all devices, the preset will be available on your mobile devices