Last Updated: 28 August 2025

Mobile-First CRO: Ensuring High Conversions on Small Screens

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Mobile-First CRO: Ensuring High Conversions on Small Screens
Aurélie BrunetWritten ByAurélie Brunet

As the Director of Performance, Aurélie specialises in creating new business for Propeller through outreach and finding areas in which the company can expand.

Think about the last time you tried to buy something on your phone. Was it a breeze? Or was it a nightmare of tiny buttons, endless forms, and pages that took an eternity to load?

Most mobile experiences are, frankly, terrible. And we’ve all been trained to think that a site that doesn’t crash is a “good” site. That bar is way too low. In 2025, a mobile site that isn’t actively helping you make sales is a liability. It’s a digital storefront with a sticky door and a flickering “Open” sign.

So let’s talk about how to fix it. This isn’t about buzzwords; it’s about turning more of your phone traffic into actual, paying customers.

Stop Annoying Your Visitors (And Google)

You know that feeling when you go to tap a link and the whole page jumps, causing you to click an ad by mistake? Or when a site is so slow you just give up? Google knows that feeling, too. They call it a bad user experience, and they’ve started penalizing sites for it.

They have fancy names for it—Core Web Vitals—but it boils down to three simple questions:

  1. Does it load fast? People don’t wait anymore.
  2. Can you interact with it immediately? Nothing’s worse than tapping a button and having nothing happen.
  3. Is the page stable? Stop the jumpy layouts. It’s the number one cause of mobile rage.

Fixing these issues isn’t just about appeasing a search engine. It’s about basic respect for your customer’s time. Get this right, and everything else gets easier.

Simple Fixes That Make a Huge Difference

You don’t need to reinvent the wheel. You just need to remove the obstacles that are making people leave.

1. Make Paying a No-Brainer

Your checkout process should be the easiest part of your entire website. Period.

Imagine this: we worked with a retailer whose mobile checkout was a ghost town. People would fill their carts and then just vanish. We did one thing: we added Apple Pay and Google Pay right at the top. The result? Checkout completions shot up by over 20%. Why? Because we replaced a ten-field form with a single thumbprint. Stop making people work to give you money.

2. Design for Real Hands

Take out your phone right now. Look at how you’re holding it. Your thumb is doing all the work, right? So why are the most important buttons—like “Buy Now”—stuck at the very top of the screen where you can’t reach them? It makes no sense.

Put your key actions in a “thumb-friendly” zone at the bottom of the screen. We tested a sticky “Add to Cart” button that stayed at the bottom for an apparel brand, and mobile conversions climbed by 35%. It just felt easier.

3. Use Tech That Has a Memory

Your website shouldn’t have amnesia. If someone spends five minutes looking at blue running shoes, don’t show them an ad for red sandals on the homepage. That’s where smart tech—call it AI if you want—comes in. It’s not magic; it’s just using data to be more helpful. Show people more of what they’re interested in. It’s common sense, but almost no one does it well.

4. Speed is Everything

A slow website is dead on arrival. It feels untrustworthy and unprofessional. Forget the technical jargon about image compression and server response times (though that’s our job to handle on the performance marketing side. Just know this: every second you shave off your load time is a direct investment in your bottom line.

So, What's the Point?

Look, conversion optimisation for mobile isn’t some dark art. It’s about building a better, more thoughtful experience for your customers. It’s about making their journey so smooth that buying from you feels like the most natural thing in the world.

When you’re ready to stop leaving money on the table and build a mobile experience that actually works, we should talk.

Drop our team a line, and let’s have a real conversation about your business.