Today's smartphones are small powerhouse with more performance than you might think. Taking iPhone 7, for example with the A10 fusion processor capable of driving Windows XP.
There's Youtube channel Hacking Jules thanks to an emulator via Xcode received Microsoft's old-fashioned operating system to start on Apple's latest phone.
The trick does not even jailbreak but all that is needed is the emulator iBox and a little trickery . All the necessary files are available on Github and instructional video you see above.