I have had some people inquiring about schedule wallpaper, and they appear to slowly be appearing. The folks at the 49ers sub-Reddit find or make them each year, and I came across a solid mobile option. You can also view it here.
Someone came across some additional mobile and desktop backgrounds, but there is a minor error on two of the options. All the games are listed with their correct Pacific Time kickoff, except the Bills game, which lists the Eastern Time kickoff. Other than that, they’re really solid.