Mobile CRO: fixing the mobile drop-off
Mobile CRO: fixing the mobile drop-off
UK Shopify stores lose 60%+ of mobile sessions between PDP and cart. Here's the mobile-CRO checklist that closes the gap: LCP, sticky ATC, thumb zones and forms.
Why mobile converts lower
Slower LCP, harder form completion, interrupted sessions. Desktop UK Shopify conversion is typically 2.5-4x mobile. Closing that gap is where mobile CRO lives.
Speed fixes
- Preload hero image with
rel="preload". - Defer non-critical JS (chat, reviews widget below-the-fold).
- WebP for all product imagery (Shopify serves natively).
- Audit third-party apps - kill anything adding >200ms to LCP.
Target: mobile LCP under 2.0s. Typical result: +10-18% mobile conversion.
Mobile UX fixes
- Sticky ATC bar (highest ROI mobile fix).
- Thumb-zone CTAs - primary buttons in the bottom third.
- Larger tap targets (44x44px minimum).
- Collapsed navigation, sticky mini-header.
- Address autocomplete for UK postcodes.
Forms on mobile
- Correct
inputmodeattributes for numeric fields. - UK postcode auto-uppercases + auto-formats.
- Single-column form layout.
- Show password toggle.
How to measure
Segment GA4 by device. Track mobile-only PDP-to-ATC and ATC-to-checkout rates. Any mobile fix should move at least one of those by 5% relative to hold consideration.
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Related tools & resources
Free UK ecommerce calculators, definitions and benchmarks referenced in this guide.
Frequently asked questions
Three reasons: slower LCP (mobile networks), harder form completion (thumb typing), and interrupted sessions. Desktop UK Shopify conversion is typically 2.5-4x mobile - closing that gap is where mobile CRO lives.