actually now with the release of the 20 line up they would expect you every 3 years a new phone since it sounds like they will be in the future waiting that long for the last OS update to release new line
it clearly states that your phone isn't compatible, if you would have read it first you wouldn't have tried to download the app. it only makes sense with the upcoming 5g. not that I'm happy about it bc they're literally getting my area ready for 5g. I'm in a rural area, with no store within 10miles and they're starting to place fiberoptic cable's that'll soon carry 5g straight to our houses. I have a Galaxy S10E & suspect in the next year or two I'll have to get a new phone too, unless 4g will still be available.