GA4 funnel exploration: find the step where buyers drop

Key takeaways

A GA4 funnel exploration shows how many users complete each step of a journey you define, such as landing page, service page, pricing, form start and form submit, and where they drop. Build one from the steps your customer journey map says matter, compare mobile and desktop, and investigate the step with the biggest drop. Keep data retention at 14 months, because funnel reports use it.

• Define 4 to 6 steps from your journey map.
• Open funnels let users join at any step; closed funnels need step 1.
• Break down by device to find mobile-only problems.
• Investigate the biggest drop with recordings and customer questions.

What is a GA4 funnel exploration?

A GA4 funnel exploration is a report in the Explore section of Google Analytics 4 that shows how users progress through a sequence of steps you define, and how many abandon at each. Steps can be page views, events or conditions. It turns a part of your customer journey into numbers, so you can see which step loses the most buyers.

• How to design a website around your customer journey
• The website conversion funnel for small businesses

Which steps should a small business funnel use?

Use steps that the customer journey says matter, in the order buyers take them. A typical service business funnel is: any session, service page view, pricing or proof page view, form start, form submit. An e-commerce funnel is: product view, add to basket, begin checkout, add payment info, purchase. Four to six steps is enough.

• Step 1: session start or landing on a key page.
• Step 2: service or product page view.
• Step 3: pricing, proof or add to basket.
• Step 4: form start or begin checkout.
• Step 5: form submit, phone click or purchase.

• Customer journey stages: what your website needs at each
• Website goals and KPIs for small businesses

Should you use an open or closed funnel?

Use an open funnel for most website journeys. In GA4, a closed funnel only counts users who enter at the first step, while an open funnel lets users join at any step. Because many buyers land on inner pages or return directly to pricing, an open funnel better reflects real journeys. Use a closed funnel for strict sequences such as checkout.

• Non-linear customer journeys: design for buyers who loop back
• Entry points: design for visitors who skip your homepage

How do you read the drop-off?

Read drop-off as a pointer, not a verdict. The biggest percentage drop shows where to look. Break down by device category to see if the drop is mainly on mobile, and by session source to see if certain visitors behave differently. Then watch session recordings at that step and check what customers ask. Some drop is normal: not every visitor is a buyer.

• Session recordings: watch real journeys without guesswork
• Mobile and desktop in GA4: find where phones lose enquiries

What are the limits of funnel exploration?

Funnel explorations count steps on the website only. Buyers who read your pricing and then phone may look like drop-offs unless phone clicks are tracked. Visitors who decline analytics cookies are not counted. Google notes that data retention affects funnel reports. And small sites may need longer date ranges to see stable patterns.

• Research online, buy offline: design for the call and visit
• Track every website enquiry to its source

When is a funnel the wrong model?

A funnel is the wrong model when buyers rarely follow a sequence on the site, for example referral-led businesses where visitors go straight to contact, or long B2B journeys spread over months. Path explorations, customer interviews and asking how buyers found you will tell you more.

• GA4 path exploration: see the routes visitors really take
• Customer journey vs sales funnel: which should shape your site?

What does this look like in practice?

A pattern we see in first funnel explorations: the biggest drop is between form start and form submit, and only on mobile. Recordings show the form's date picker failing on some phones, and a required field asking for information buyers do not have yet. Desktop users barely notice.

Fixing the field and the date picker recovers buyers who were already trying to enquire. Across our client work we have seen a 2.4x enquiry rate from conversion changes of this kind. Global Bridge Labs (GBL) splits every funnel by device before drawing conclusions.

• See client work
• Website Design & Development for UK businesses

Funnel exploration checklist

• Set data retention to 14 months.
• Track form start, form submit and phone clicks as events.
• Choose 4 to 6 steps from your journey map.
• Use an open funnel for website journeys.
• Break down by device and source.
• Investigate the biggest drop with recordings.

• Customer journey metrics: the numbers that show it working

Next step

A funnel built from your customer journey shows exactly which step to fix first. We will set one up and walk you through what it shows.