For many online stores, most visits now come from phones, and the product page is where those visits turn into sales or don’t. The problems below rarely look serious on their own. That’s exactly why they survive for months: nothing is broken, the page just quietly sells less than it could.
Open one of your best-selling product pages on your phone and go through the list.
1. The add-to-cart button is below the fold
On desktop the button sits next to the image. On a phone, the layout stacks: image, title, price, variant pickers, a description, and finally the button, sometimes a full screen down. Shoppers who don’t see a next step often don’t look for one.
Fix: make sure the button is visible without scrolling on a typical phone, or add a sticky add-to-cart bar that appears once the main button scrolls out of view.
2. No reviews near the price
The moment someone sees the price is the moment they decide whether it’s worth it. If your reviews are three scrolls down, that decision happens without them.
Fix: show the star rating and review count right next to or under the price, and link it to the full reviews.
3. Shipping costs only appear at checkout
Unexpected extra costs are one of the most common reasons people abandon a purchase. If shipping is only revealed at the last step, it feels like a surprise even when it’s fair.
Fix: state shipping costs or a free-shipping threshold on the product page, close to the button. A one-line note like “Free delivery over €50, 2–3 days” does a lot of work.
4. Something is covering the buy button
Chat bubbles, cookie bars, “spin to win” tabs and sticky promo banners all compete for the bottom of a small screen, which is exactly where the buy button tends to end up.
Fix: check the page on a real phone with every app enabled. Move or shrink widgets that overlap key actions, or hide them on product pages.
5. A pop-up fires in the first second
A visitor who has seen nothing yet is asked for their email address. Most close it; some close the tab. On mobile, a pop-up also covers the whole page, so it’s the only thing they see.
Fix: delay pop-ups until the visitor has scrolled or spent some time on the page, and make the close button large and obvious.
6. Variant pickers that are hard to use
Tiny colour swatches, size dropdowns that open a cramped native list, and sold-out options that look the same as available ones all add friction right at the point of choosing.
Fix: use large, tappable buttons for sizes and colours, clearly mark what’s out of stock, and show the selected option in words, not only as a highlighted swatch.
7. Images that load slowly or make the page jump
Large product photos are often the slowest thing on the page. When they load late, the layout shifts and the button someone was about to tap moves. Google measures this as Cumulative Layout Shift, and shoppers feel it as a page that fights back.
Fix: serve properly sized, compressed images, reserve space for them so the layout doesn’t move, and check your page in Google PageSpeed.
8. A wall of description text
A long paragraph is hard to read on a phone. Shoppers scan for a few facts: what it’s made of, how it fits, what’s included, how to care for it.
Fix: lead with three to five short bullet points with the key facts, and put the longer story below or behind a “Read more”.
9. Returns and delivery info is hidden in the footer
Buying from a store you don’t know feels risky. A clear returns policy lowers that risk, but only if people see it before they decide.
Fix: put a short line about returns and delivery times near the add-to-cart button, linking to the full policy.
10. Tap targets that are too small
Links and buttons that are small or close together lead to mis-taps: the wrong size selected, the wrong image opened, the page zoomed in by accident. Google’s guidance is to make tap targets around 48 by 48 pixels with some space between them.
Fix: increase the size and spacing of buttons, swatches and quantity selectors, especially anything near the buy button.
How to check your own pages
Go through the list on a real phone, in a private browser window, starting from your top three product pages. Most of the fixes above are theme settings or small layout changes, not redesigns.
If you’d like a second pair of eyes, StorePeek checks your homepage and product pages on desktop and mobile and ranks what it finds by severity. There are specific guides for a Shopify conversion audit and a WooCommerce conversion audit, and the first audit is free.