Lack of updates after 1-2 years is my biggest gripe with most Android OEMs. I use a Google Pixel specifically because it will have a longer update lifespan typically. I don't think it is reasonable to expect United or other companies to keep supporting ancient operating systems on un-updated phones. Android 4 came out in 2011. https://en.wikipedia.org/wiki/Androi...Cream_Sandwich

I think it might be time to update the phone, meantime, you could use the webapp I suppose.