Recently, there have been reports of what appeared to be a Samsung Galaxy S9 Mini. More details of that device have been revealed and it would seem that we've been bamboozled yet again, with the device looking to be a Galaxy S9 variant designed exclusively for the Chinese market.
https://www.notebookcheck.net/We-ve-been-bamboozled-yet-again-There-will-be-no-Samsung-Galaxy-S9-Mini.299320.0.html
My wife and daughter gave up the ghost and finally moved off their S4 minis to the iphone SE