The 10 mobile checkout fixes that lifted CR 47% in 30 days.

Why mobile is the gap

Average eCommerce CR sits at 1.4–1.8% on mobile and 2.5–3.5% on desktop. Top 20% above 3% blended. The gap between desktop and mobile is where most CR lift lives — same product, same brand, same offer, just structurally easier to complete on desktop.

Closing the gap on mobile is worth more than doubling traffic. Here are the 10 fixes that, applied together, typically lift mobile CR 30–50% on existing traffic.

Fix 1–3: payment friction

• 1. Apple Pay + Google Pay — single-tap checkout. For mobile traffic, typical CR lift 12–25% on the checkout step alone.
• 2. Shop Pay (Shopify) or PayPal Express — saved-state checkout for repeat visitors. Compounds with Apple/Google Pay.
• 3. Express checkout above the cart — surface express-pay buttons above the cart total, not buried inside checkout. Reduces 1 step.

Fix 4–6: address + form friction

• 4. Address autocomplete (Google Places API) — typing a full address on mobile is brutal. Autocomplete cuts checkout time 30–60 seconds.
• 5. Postal-code-first address entry — enter postal code, system fills city + state. Reduces 4 fields to 2.
• 6. Native input types — type="tel" for phone, type="email" for email, inputmode="numeric" for postal. Triggers correct mobile keyboard.

Fix 7–8: trust + speed

• 7. Sticky checkout button — on long product pages, sticky “Add to Cart” eliminates scroll-back friction.
• 8. LCP under 2.5s on checkout — checkout-page Core Web Vitals matter more than homepage CWV. Every 100ms above 2.5s costs CR.

Fix 9–10: abandonment recovery

• 9. Saved cart recovery — when a logged-in or email-known user abandons, save the cart for 7 days and surface it on next visit.
• 10. Abandoned-checkout email + SMS — automated 30-min, 24-hr, 3-day sequence. Pairs with email lifecycle work.

How to prioritise the rollout

Don’t ship 10 fixes simultaneously — you can’t tell what worked. Order:

• Week 1: Apple Pay + Google Pay (fixes 1–2). Highest single-fix lift.
• Week 2: Address autocomplete + postal-first (4–5).
• Week 3: Native input types + LCP optimisation (6, 8).
• Week 4: Express checkout + sticky buttons (3, 7).
• Week 5–6: Cart recovery + abandoned-checkout flows (9–10) — pairs with email work.

Measuring properly

Track mobile-only CR separately from blended CR. Most analytics dashboards report blended; the mobile-specific signal is what you optimise.

Run as A/B tests where traffic supports it. Below ~10k weekly mobile sessions, before/after measurement with control variables works fine. Statistical significance window: 4–8 weeks for fixes that lift CR 10–30%.