Microsoft CEO Satya Nadella reflected on the company's exit from the mobile phone market, describing it as one of his most difficult decisions and expressing a sense of missed opportunity. Former CEO Steve Ballmer noted that a mix of "paranoia and confidence" may have limited Microsoft's ability to succeed in the smartphone market. The decline of Windows Phone was attributed to a weak app ecosystem, which the new concept, Windows Astria, aims to improve by running Android apps natively. Windows Astria incorporates elements from Windows 11 and features like Live Tiles, designed for modern screens. The concept also adapts to larger screens and foldable devices, showcasing potential applications like MS Word and a system-integrated Wallet app.