Every now and then I see a vintage car in the street, originally from the 40s or 60s, in spotless condition. Cars have been around for longer than computers… But would such a thing be viable for electronics?
Wait, does it exist already and I never heard of it?
This… Really feels like a very stupid question. Sorry
Sure, people will still be showing off vintage computers just like they are doing now. The biggest problem will likely be finding working hard drives or SSDs that are compatible with the system.
Phones will probably be a lot harder to keep running that long though. Modern flash memory is not very good for long term data retention. OLED displays have a limited shelf life. Batteries are difficult to replace without damaging the phone assuming you can even find a replacement.
phone tech also keeps advancing quite fast so the devices become incompatible when 3G and earlier tech is no longer in service
If you can get the phone to boot decades from now, the cell network could be simulated with an SDR. It has to be done in a faraday cage to avoid causing interference though.