According to reports, when Win10 was released, Digital Trends believed that Microsoft needed to stop restarting Windows Phone. The comment said that Win10 will cause WP to start again. The reason is that the change in Win10 will make developers and users crazy. Then this article will explain some changes history from WP7 to Win10. Windows Phone——Photon against Windows Phone 7 Back in 2010, Microsoft decided to overthrow Windows Phone 6.5 and release Windows Phone 7. This is a major shift in the history of Windows Mobbile, both in system design and in new applications. During this period, Microsoft was swaying between the name —— Windows Mobile and Windows Phone, very confusing. Microsoft chose "Photon" as a system iteration of Windows Phone 6.5. Photon is a continuation of the Windows Mobile design philosophy, improving legacy issues and developing new systems. Regarding the code name "Photon", very few people know that because the relevant personnel have signed a confidentiality agreement. It's very short, and Microsoft faces two choices: take the safe route "Photon" or abandon everything and start a new Windows Phone 7. In the end, Microsoft boldly chose the latter and abandoned everything in Windows Mobile. Windows Phone 7 uses a lot of menu design elements of Zune HD, but Zune HD has evolved from Windows Media Center. This Metro design eventually spread to Microsoft's current products, including Windows. Because Metro has a trademark dispute, Microsoft calls it Modern. The point is: Microsoft's operating system will have major changes between generations, especially Windows Mobile 6.5.3 to Windows Phone 7. However, due to the success of the iPhone, the rise of Android, considering the market share of Windows Mobile is in crisis, Microsoft needs to find a fundamental starting point. According to the author's knowledge, the decision was not controversial at the time, and Microsoft was a step at the time. Windows Phone 7 to Windows Phone 8—— The rise of the Windows NT kernel Another change came when Microsoft released WP8 in June 2012. This change involves the bottom layer of the WP system, up to the kernel. From Pocket PC 2000 to Windows Mobile and Windows Phone 7, they all use the Windows CE kernel (referred to as Windows Embedded Microsystems), which is the basis for Windows Mobile Normal Edition, Windows Mobile Standard Edition, and Windows Mobile Professional Edition. Microsoft has changed the kernel from Windows CE to Windows NT for two reasons: • Windows CE is obsolete, limited, and can't keep up with the times, such as Skype does not support VOIP Internet phone or messaging system. The serious limitations of Windows CE will limit the development of Windows Phone. • After switching to NT, Windows Phone will be more attractive. In 2011, Microsoft was already planning a “three screens and one cloud” vision. In order to get pages with the Windows desktop system, WP needs to be upgraded to the NT kernel. In other words, it's all for Win10. WP8 can be compatible with previous WP7 and WP7.5 applications, but WP7 and WP7.5 cannot be upgraded to WP8. Although the WP market share is small, it also deeply hurts users' expectations for WP. Wp8 brings new developer tools and ease of use, and is worthy of Microsoft's doing. Going to Win10 For PhoneWIN10 is Microsoft's next-generation operating system that will span PCs, tablets and mobile phones. The current WP8 phone is still not clear how to upgrade, but modern devices will also be upgraded. At that time, WP7 could not directly upgrade WP8 due to the kernel. Win10 is Microsoft's great achievement, for the first time across a variety of devices, and Windows Store apps will run on all devices. Why don't you worry about this problem? If you agree with Microsoft's mobile strategy, then Microsoft must go this way in the general direction. What is worthy of criticism from Microsoft is that it has not seen the limitations of WP7, which has caused WP7 to WP8 to be out of touch. Will Win10 be bothering consumer users? I don't think it will. Over the past four years, Microsoft's UI design has been slowly known, and the UI is evolving and getting better and better. Considering application compatibility, those old WP7 devices will not be able to run new applications. Currently, WP7 has a 15% share in WP and WP8/wp8.1 has a share of 85%. What is the impact on developers? Win10 also brings changes compared to WP8, which makes it easier for developers to write applications using universal coding and can run anywhere. The last change is not easy, there are innovations and risks in the transformation. Win10's development in the WP system brings far more benefits than discomfort. Now X86 version of Win10 has been released, and ARM version of Win10 will arrive in 2015, thank you for reading, I hope to help everyone, please continue to pay attention to this, we will try to share more excellent articles.