The Sony Xperia Z was indeed a groundbreaking device when it was released, particularly known for its design and being one of the first mainstream waterproof phones. However, when comparing it to today's smartphones, especially budget models, there are several factors to keep in mind.
In terms of performance, the Xperia Z uses hardware that is significantly outdated. It might handle basic tasks but could struggle with newer apps or multi-tasking efficiently. The software is another challenge; it won't receive official updates, leaving it vulnerable to security issues unless you opt for custom ROMs, which can breathe some life into older devices if you're comfortable with the process.
The battery life is also a potential concern. Over time, all lithium-ion batteries degrade, so a second-hand Xperia Z might not last long on a full charge, especially compared to newer models with more efficient power management.
In contrast, current budget smartphones offer better processing power, improved cameras, and longer-lasting batteries. They also come with updated software, ensuring better security and new features.
That said, if you're interested in the Xperia Z for its design or as a backup/secondary phone, it could still be a fun device to use. Just be aware of common issues like potential screen problems, battery degradation, or any physical damage due to its age.
Before purchasing, you might want to check online marketplaces for reviews or test the phone if possible to ensure it meets your expectations.
Have you considered specific models in the budget range? They might offer more reliability as your primary device.