How to find friction in your mobile checkout

Start on the product page

Checkout friction can begin before a customer opens the cart. On a small screen, a product image may push an option out of view, a size selector may be difficult to use, or a sticky banner may cover the add-to-cart button.

Choose a product with options and follow the journey on a phone. Check that price, availability, and the selected variation remain clear. Add it to the cart, change the quantity, and return to the product page. The interface should make each change understandable.

Make costs and choices easy to understand

Review when delivery costs, taxes, and other charges become visible. If the final total changes, the reason should be clear before the customer confirms the order. Check that delivery choices are labelled and unavailable options are explained.

Try the cart with a valid discount, an invalid discount, and no discount. A failed code should not erase the cart or hide the path forward. Review the wording from the perspective of someone who does not know your store's internal rules.

• Selected products and variations are correct.
• Quantity changes update the total consistently.
• Delivery options and costs are understandable.
• Discount errors explain how to continue.

Test input and recovery

Enter a long name, an apartment number, and a phone number in the format your customers normally use. Verify that required fields are labelled and that the on-screen keyboard does not hide the field or the next action.

Then make a deliberate mistake in one field. The error should be visible near the problem, and the rest of the form should retain its values. Check whether a customer can return to an earlier step without losing their progress.

Verify payment and confirmation safely

Use your payment provider's test environment or an approved test-order procedure. Check the successful path, a declined payment, and a cancelled attempt. Avoid entering real payment details into an unfamiliar test setup.

After a successful test, verify that confirmation is clear and the expected order record exists. Document defects with the browser, device, steps, and screenshots. Fix issues that block a purchase first, then retest the complete journey rather than just the individual button.

• A failed payment provides a clear next step.
• Retrying does not create unintended duplicate orders.
• The confirmation matches the order that was submitted.
• The store receives the expected order details.