[mystifyingpoi]

> "selfhosting a cellphone at home with some kind of remote access system

You can use TeamViewer for that. Or maybe scrcpy could be coerced into working in a similar way.

[prmoustache]

Good luck making it work again remotely after a long power outage.

[mystifyingpoi]

Not sure what do you mean? If that is a concern, there are solutions for this. Like UPSes and backup cellular connections.

[prmoustache]

That may not even be a power outage, a simple bug or anything that may hang or reset the smartphone and the scrcpy session can't be started again.

Unless you have a trustable person who has keys to your home and is available to power on and make sure a kvm setup is on you can't self host and just assume that what is running at home will be up all the time when you are abroad compared to a managed datacenter with redundancy, remote access and personel available.