Companies like Apple make their best attempts to ensure that whatever operating system they develop has certain countermeasures that prevent those platforms from being run or installed on devices that do not feature the company's logo. Fortunately, that is where emulation comes into play as it provides a gateway to those wanting to boot up Apple's 'forbidden' software releases. On this occasion, we have a Redditor who successfully got macOS High Sierra to work on an unnamed Galaxy A smartphone.
The name of the Galaxy A handset was not mentioned by Redditor 'Aggressive_Level7574' but he shows concrete proof that Samsung's non-flagship devices are capable of booting up macOS High Sierra. The title of the post reads 'macOS High Sierra on a Samsung Galaxy (finally works),' suggesting that the person trying to get it running on an Android smartphone had suffered numerous failed attempts.
In the thread below the post and in the image below, it is mentioned that macOS High Sierra was run through emulation using Vectras VM, and even though Apple's operating system is now seven years old at this point, it is an impressive feat. One thing the person mentioned is that Samsung DeX is not supported on a Galaxy A smartphone, meaning that it is not possible to project macOS High Sierra on an external monitor.
However, DeX is supported on Samsung's more premium offerings, meaning that it is entirely possible for someone to operate Vectras VM on a recent flagship like the Galaxy S24 Ultra and try to boost macOS High Sierra. Then, they can attempt it again using DeX to see if they can use Apple's older Mac update on a standalone display. Hopefully, someone will catch wind of what we are talking about and try it themselves.
As for the Redditor, there is no mention of how the booted-up OS performed on the Galaxy A-series handset. After all, depending on the device's release date, macOS High Sierra could either run terribly or provide a respectable experience.