Mobile-First: Why Over 70% of Your Customers Are Searching on Their Phone

Think about how you search for things. You're out, you need a plumber, you grab your phone. You're looking for a restaurant on a Saturday night — phone. You want to find a local electrician before the office closes — phone.

Your customers are doing the same. Over 70% of local searches now happen on mobile devices. And Google knows this — which is why it uses your mobile site's performance as its primary ranking signal, not the desktop version.

What "Mobile-First Indexing" Actually Means

Google switched to mobile-first indexing a few years ago. In simple terms, this means when Google crawls and evaluates your website, it looks at the mobile version first. If your mobile site is slow, hard to use, or missing content that's on your desktop site, your ranking suffers — even for people searching on desktop.

This is why having a "desktop site that also works on mobile" isn't good enough any more. Your mobile experience needs to be genuinely excellent, not an afterthought.

What a Poor Mobile Experience Looks Like

You'd be surprised how many small business websites still have these issues:

• Text that's too small to read without zooming in
• Buttons and links too close together to tap accurately
• Images that stretch wider than the screen, causing horizontal scrolling
• Contact forms with tiny input fields that are frustrating to fill in
• Pages that take 5+ seconds to load on a 4G connection
• Pop-ups that cover the screen and are impossible to close on a phone

Each of these issues causes people to leave. And because they leave quickly, Google registers a high "bounce rate" which further hurts your ranking — a feedback loop that keeps getting worse.

The Phone Number Test

Here's a simple test of your mobile experience: how many taps does it take for a mobile visitor to call you?

The answer should be one. Your phone number should be visible without scrolling on the homepage, and it should be a clickable link that dials immediately. If someone has to hunt for your number, scroll down past three sections, copy it manually, and switch to their phone app — you've already lost most of them.

Speed Is Non-Negotiable on Mobile

Mobile connections are generally slower than Wi-Fi. Even on 4G or 5G, real-world speeds vary. A page that loads in a second on your office Wi-Fi might take four seconds on someone's phone signal as they're walking down the street. Pages that are not optimised for mobile will always suffer disproportionately on slower connections.

Heavy images, unnecessary scripts, and bloated code all add up. Every extra second of load time increases the percentage of people who leave before the page has finished loading.

What Good Mobile Design Looks Like

A mobile-first website is built with the phone experience designed first, then adapted for larger screens. In practice, this means:

• Large, readable text that doesn't require zooming
• Generous tap targets — buttons big enough to press accurately with a thumb
• A phone number prominent and tappable at the top of every page
• Forms with large input fields and sensible keyboard types (number pad for phone fields, etc.)
• Images that are compressed and sized appropriately for phone screens
• No horizontal scrolling, no overflow, no accidental taps