HTC with Microsoft afterwards due to Nokia's dominance in Windows Phone devices, and started focusing solely on Android. On 1 March 2015, HTC unveiled Vive, a virtual reality head-mounted display in collaboration with Valve Corporation. In June and October 2015, HTC reported net losses; the company has faced increased competition from other smartphone makers, including Apple, Samsung, and others, which had resulted in a decline in its smartphone sales, as well a major loss of market share. Its smartphone market share had risen back to 7.2 percent in April 2015 due to its strong sales of recent devices, but HTC's stock
Advanced Comprehensive Operating System Advanced Comprehensive Operating System Advanced Comprehensive Operating System is a family of mainframe computer operating systems developed by NEC for the Japanese market. It consists of three systems, based on the General Comprehensive Operating System family developed by General Electric, Honeywell, and Bull. Two of these systems, ACOS-2 (based on GCOS 4) and ACOS-4 (based on GCOS 7) are still sold, although only ACOS-4 is under active development. ACOS-6 (based on GCOS 8) is an obsolete high-end mainframe platform, which ceased active development in the early 2000s. In late September 2012, NEC announced a return from IA-64 to the previous