I have a filter set up on a news web part on my site, but when viewing this list of news in the SharePoint Android app, the items are not filtered. Is there a way to get this working?
What filter do you use?
Per my test, I could not reproduce your issue when I add a simple filter in news web part, SharePoint android app will display filtered news successfully.
Please make sure you have published the page after editing, if the issue still exists, switch to other mobile phones to compare the result.