#Mobile

So I did something dumb recently. Built a whole client’s responsive site, tested it on my phone, and never bothered with actual user devices. Assumed 'mobile-friendly' was a checkbox, not a process. Result? A 7-year-old tablet user couldn’t scroll past the hero section. Classic hubris.

Turns out 40% of the site’s traffic was on Android tablets. Fix? Spent 3 days refactoring CSS grid breaks into media queries. The lesson? Treat responsive design like smoking meat – you can’t rush it, and a missed step at 120°F ruins the whole thing.

Anyone else make the mistake of trusting your own device as a ‘test’ before launch? Or am I the only one whose ‘quick responsive check’ became a Monday-morning crisis?

I’m building a small mobile app by myself and I’m debating whether to set up a full design system from the get-go. I know it can help with consistency and speed up future work, but it also feels like a lot of overhead for a one‑person project. Some of you have probably done this—what’s your take? Do you think it’s overkill, or does it actually save time in the long run? I’d love to hear real experiences, not just textbook advice.