In 2015, Microsoft described a limited Windows 10 for phones test involving selected Xiaomi Mi 4 power users in China. The program drew attention because it brought a Windows phone experience to a device normally associated with Android. Microsoft’s own later account confirms that the company worked with Xiaomi and a set of Mi 4 users to test Windows 10 on mobile devices.
What Microsoft actually confirmed
Microsoft’s Windows Experience Blog said the Mi 4 activity was part of its work with Chinese technology companies and described feedback from selected power users. That supports the existence of a limited test program. It does not establish that Microsoft was releasing a general Windows 10 ROM for every Android handset, that the installation was safe for ordinary users, or that it preserved the original Android setup.
The 2015 Tecblast headline says the ROM could wipe Android from phones. We could not verify that exact claim from a Microsoft installation guide or a supported public download page. Treat the wording as unconfirmed, not as a current how-to. No firmware, flashing, bootloader, or data-erasure instructions belong in a modern article about this discontinued experiment.
Why the distinction matters
A developer or hardware-partner test can be limited by model, region, eligibility, and support terms. It is different from a public operating-system upgrade. Installing an operating-system image on an unsupported device can erase data, break hardware features, or leave a phone unable to boot. A link preserved in an old blog post may no longer be hosted or may point to a file that is not safe to install.
For an Android phone today, use updates offered by the phone manufacturer or carrier. Back up important files before any supported upgrade, confirm the exact model, and avoid unofficial ROM files unless you understand the risks and have a trustworthy source. If the goal is to try Windows apps or services, use a supported Windows PC or current cross-platform app instead of repurposing an old phone.
Windows 10 is no longer current support guidance
Microsoft ended free Windows 10 software updates, technical assistance, and security fixes on 14 October 2025. The 2015 Mi 4 test is therefore a historical technology story, not a recommendation for present-day device use. Readers should check current Microsoft and phone-manufacturer support pages for current products.
How to read this archived report
The confirmed story is narrow: Microsoft worked with Xiaomi and selected Mi 4 users to test Windows 10 on mobile devices. The exact “wipe Android” claim and any broader consumer availability remain unverified here. Keeping that distinction visible protects readers from mistaking a partner test or old preview for supported firmware.
What the record confirms
In September 2015, Microsoft described working with Xiaomi Mi 4 power users in China to test Windows 10 on mobile devices. Microsoft later listed the Mi 4 among phones eligible for a Windows 10 Mobile Insider Preview build. These sources support a limited historic test and later preview availability for that model, not a stable Windows release for every Android handset or a current supported installation path.
What this article does not claim
Period headlines suggested that installing the software could erase Android. The cited Microsoft posts do not document a universal wipe outcome, current firmware download or official procedure to attempt today. This article does not repeat that claim as fact and contains no flashing steps. Compatibility depended on exact model, firmware and preview instructions.
Why the story mattered
The project showed an unusual software-company and phone-maker partnership. It also illustrated how mobile operating systems depend on drivers, firmware and hardware-specific support. A preview on one named model does not imply that the same image will work on similar devices or regional variants.
Advice for owners today
Do not use archived links or forum packages on a primary phone. Unsupported firmware can erase files, break radio functions or leave a device unable to boot. Treat the Mi 4 test as technology history. Images implying a universal Android-to-Windows conversion should be removed or captioned as historical illustrations.
