Samsung Galaxy S4 Sales Estimates Cut6 June 2013bzamayo.com/samsung-s4-sales-estimatesBarrons.com: Hosseini today writes that consensus estimates for Galaxy S4 unit sales have come down to 20 million units this quarter and 20 million next quarter, down from prior estimates of 25 million and 30 million. That’s it. It’s over. Obviously, Samsung is doomed.