Windows 10 was supposed to breathe new life into Microsoft’s smartphone sales, but we haven’t seen any evidence of that happening, and some analysts believe we never will. According to the IDC’s recent forecast of the smartphone industry, Windows Phone shipments will decline by 10.2% this year, and will experience little in the way of growth in the years to come. That forecast is a lot different than the one Microsoft gave after it acquired Nokia’s handset business, and this may be because Microsoft hasn’t been able to secure many OEM partnerships.