Phone visitors arrive with a tight attention budget. If a page drags, if taps feel awkward, or if the next step is unclear, they're gone, even when your service is exactly what they need. And people don't browse in perfect conditions. They're in a cab, half on weak data, juggling messages, switching between maps and your site. That's normal. So the mobile experience has to be efficient, readable, and decisive about what to do next, without feeling pushy. In this article, we will discuss the phone-based issues that cause drop-offs and the design choices that fix them.