I have a Nokia 1020 with a 41 megapixel camera. I have installed the last 4 builds of Windows 10 for phones including today's release. Each time I reverted back to Windows 8.1 after trying Windows 10 and finding it unusable for me. Main problem is the camera app. It was only working in video not stills. That is a deal breaker for me since the camera was the reason I bought this cell phone. One problem is that setup doesn't properly recognize my phone as a Nokia 1020, it thinks I have a difference model. Based on this week's news about Microsoft laying off 9,800 employees most of them in the phone division, I am wondering if Microsoft is about to pull the plug on Windows phones and Windows 10 for phones. If they continue on, they are not nearly ready to release it as they are with Windows 10 for computers. Windows 10 for phones needs a lot of work before it can be used.