Optimize product pages for mobile

Mobile shoppers abandon product pages within seconds if images or buttons feel cramped. Update the product page templates so the product title, primary image, price, and Add to Cart remain visible without scrolling on an iPhone 14 portrait view; ensure thumbnails collapse into a single swipeable gallery; make the Buy button full-width and fixed near the bottom; check variants display without wrapping; test with a real 32kb/s simulated connection before publishing.

Before I publish mobile changes, make it obvious and fast to buy. Move the savings or promotions to sit directly under the price, reduce descriptive text to one short paragraph with a See details link, convert image thumbnails into a swipeable carousel with pinch-to-zoom, enlarge the variant selector and keep it on one line for common SKUs, and highlight the primary CTA with a solid color and shadow. Flag any elements that push the Add to Cart offscreen on typical 5–6" phones.

On a product page viewed on mobile, support reports many users tap images but never add items. I'm the ecommerce manager; the designers say the layout is intentional and developers say it's working as designed. I worry this is costing a week of conversion and that hiding the CTA is the issue, but I don't know whether it's layout, image loading, or a variant-selection bug. What is the most likely cause and the quickest test to confirm it?

Across launches this quarter we keep losing conversions on phones when teams add badges, long descriptions, or extra carousels. I own conversion and am tired of last-minute mobile firefights. Which habit should I force into the release checklist so product pages stay buyable on small screens, and what single rule will stop designers and marketers from pushing CTAs offscreen?