Photo by Andrea Piacquadio on Pexels The pitch sounds better than the reality, usually Somewhere in the last year or two, "use your phone as a second monitor" turned into one of those tips that gets repeated everywhere without much scrutiny. iOS has Sidecar-adjacent tricks, Android has a handful of apps that mirror or extend your display, and the promise is always the same: you're carrying a screen around all day, why not use it? I've tested this setup more than once, mostly out of curiosity, and my honest take is that it's a real productivity tool for a narrower set of situations than the pitch suggests. It's not a laptop screen replacement. It's not going to make you forget your monitor at home. But for a specific kind of task, it earns its place, and I think that's worth spelling out clearly instead of just saying "try it, it's great." What actually works: apps, not full desktops The mistake people make is trying to use the...
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