- Parts breaking that can't be easily replaced. In particular Li-ion batteries have a limited lifespan, both in time and in number of cycles. - Security: hacke

- Parts breaking that can't be easily replaced. In particular Li-ion batteries have a limited lifespan, both in time and in number of cycles. - Security: hackers constantly find new vulnerabilities. And depending on the kind of device, it can be a big deal. - Services shutting down, it can be direct (if the device connects to the internet), or indirect (if some "companion app" is no longer available). - Or just plain obsolescence. The device may be incompatible with modern standards, irrelevant, unfashionable, etc...