It's a tough gig launching smartphone in the high-end market these days with even Apple hitting a downturn. If Samsung was hoping the vaunted all-new Galaxy S10 might help turn things around, pre-orders in its home market of South Korea suggest that it might have an uphill battle.
https://www.notebookcheck.net/Galaxy-S10-pre-orders-down-on-S9-Note-9-in-home-market.412493.0.html