Analytics showed solid traffic. Mobile conversions still tanked. Session replay showed the classics: CTA outside the thumb zone, slow LCP, a cramped form and horizontal scroll.
Quick wins
1. LCP and fonts under control 2. CTA visible without a scroll chase 3. Forms: larger tap targets, correct `inputmode` 4. No content wider than the viewport 5. Sticky bars that don’t cover content
Process
Mobile-first wireframes → lab + field metrics → A/B on critical steps.
Conclusion
“We are responsive” ≠ “it works on a phone”. Measure conversions by device.
At PrometeyLabs we treat mobile as the primary channel — not an afterthought.
Keywords
mobile website
responsive design
mobile conversion
mobile first
mobile UX
