Here’s my take on this. It’s certainly possible for both platforms, though the methods and ease of use differ quite a bit.
With Android, the open nature of the OS allows for numerous third-party applications designed for remote screen sharing. Once set up, they can provide a live view on another device. The potential downside is that performance can vary, with occasional lag or disconnects depending on the network quality.
For iPhones, the process is generally more restricted due to Apple’s closed ecosystem. While native tools are meant for local networks, remote solutions do exist, but they often require more complex configurations to work around the security protocols. So, while it’s achievable on both, you’ll find Android typically offers more straightforward options.