- Mobile is now the majority of traffic - 50.3% worldwide and 57.7% in Bulgaria (Statcounter, May 2026). For local services like restaurants and auto shops it is typically even higher.
- Since October 2023 Google uses ONLY the mobile version of your site for indexing and ranking (mobile-first indexing). What is hidden on mobile does not exist for Google.
- Mobile Core Web Vitals are a ranking factor. Aim for the green: LCP under 2.5s, CLS under 0.1, INP under 200ms (the current good thresholds per web.dev).
- Responsive design is enough - you do not need a separate mobile site. Check yours in 30 seconds at pagespeed.web.dev; under 50 means real work to do.
Last month I checked the sites of 10 Bulgarian businesses that show up on page one of Google. 8 of them had mobile issues - buttons you can't tap, text you have to zoom into, menus that overlap. And these people are paying for SEO.
The problem is that most business owners check their site on a laptop. They sit at their desk, open the site on a big screen, and say "looks good". Only their customers aren't on a laptop. Their customers are on the bus, in a bank queue, or lying on the sofa with a phone in their hand.
58% of internet traffic in Bulgaria comes from mobile devices (50%+ worldwide)
For services like restaurants, auto shops, and delivery the share is typically even higher.
How much traffic actually comes from mobile?
For a long time desktop was king. That ended years ago and a lot of people still have not caught up. According to Statcounter , mobile reached 58% of all internet traffic in Bulgaria by May 2026 (57.7%), and worldwide it has just passed the 50% mark. Here is the Bulgaria trend:
| Year | Mobile | Desktop | Tablet |
|---|---|---|---|
| 2020 | 48% | 47% | 5% |
| 2022 | 54% | 42% | 4% |
| 2024 | 56% | 41% | 3% |
| 2026 | 58% | 40% | 2% |
The trend is clear - every year mobile eats more of desktop. There is no reason that will stop. Phones get faster, screens get bigger, and people get used to doing everything on them.
If you run a restaurant, an auto shop, a hair salon, or any local service - mobile visitors are probably over 70% of your traffic. These people are searching for you while they are out and about and need you right now.
What is mobile-first indexing and why does it affect you?
Years ago, Google looked at the desktop version of your site to decide where to rank you. The mobile version was a nice-to-have - good if you had one, but not required.
That changed. According to Google Search Central , since October 2023 Google uses ONLY the mobile version of your site for indexing. It is called mobile-first indexing and it affects every single site.
In practice that means:
The desktop version
It can be perfect. It can be fast, beautiful, and packed with content. Google no longer treats it as the primary version. It is secondary.
The mobile version
This is the version Google crawls, indexes, and evaluates. If your mobile version hides content, runs slow, or breaks - that is exactly what Google sees.
I have seen sites that hide text on mobile "so it does not feel cluttered". Sounds reasonable, except Google no longer sees that text. If important paragraphs or whole sections only show on desktop - for Google they do not exist.
What does "responsive design" actually mean?
The term gets thrown around a lot, but what does it actually mean? Responsive design is when a single site automatically adapts to the screen you are viewing it on. Not a separate mobile site. Not an app. One site that reflows.
Here is what should happen when you open a site on a phone:
- Text is readable without zoom - the font is large enough
- Buttons are large enough to tap with a thumb (at least 48x48 pixels)
- No horizontal scroll - everything fits the screen width
- The menu works - no overlap, no disappearing, it opens normally
- Forms are easy to fill - the fields are not tiny
If someone suggests a "separate mobile site" (m.example.com) - that is a 2012 approach. Google explicitly recommends responsive design. A separate mobile site creates duplicate content issues and is a maintenance nightmare. At Coding Turtles we have not built a separate mobile site since... 2015? Everything is responsive from day one.
How do you check whether your site is mobile-friendly?
You do not need a developer to find out whether you have a problem. Here are specific tools you can use right now:
1. Google PageSpeed Insights
Open pagespeed.web.dev , enter your site URL, and wait 30 seconds. You get a score from 0 to 100 for mobile and for desktop. If your mobile score is under 50 - you have a serious problem. Between 50-89 - room to improve. Over 90 - well done.
2. Google Search Console
If you have Search Console set up (and you should), go to the "Mobile Usability" section. Google tells you directly which issues it found - buttons too close together, text too small, content wider than the screen.
3. Chrome DevTools
Open your site in Chrome, hit F12, then click the phone/tablet icon at the top left. You can see how your site looks on different devices - iPhone, Samsung, Pixel. Fast and free.
4. A real phone (the best one)
Seriously - open the site on your phone. Try to contact yourself. Try filling out the contact form. Try finding the address or phone number. If it is hard for you, imagine how it feels for your customers.
If you spot problems after these tests, do not panic. Most of them get solved with proper web design and a bit of technical work. But first you need to know the problem exists.
What happens to rankings when the mobile version is poor?
I will be blunt - if your mobile version is bad, you are losing positions. Not tomorrow, not next month - you have probably already lost them and have no idea.
Here is what actually happens:
Google ranks you lower
Core Web Vitals have been a ranking factor since 2021. If your mobile version is slow (LCP above 2.5 seconds), unstable (CLS above 0.1), or sluggish to react (INP above 200ms) - a competitor with better metrics will outrank you. That simple.
Visitors leave
A Think with Google benchmark study (2017) of nearly 900,000 mobile ad landing pages found that the probability of a mobile visitor bouncing rises 32% as load time grows from 1 to 3 seconds, and 90% by 5 seconds. Those people go to the competition, and Google notices the bounce rate, which pushes your positions down further.
You lose content visibility
If your mobile version hides text, images, or entire sections - Google does not index them. You can have brilliant content that simply does not exist as far as search is concerned.
The reverse is also true. A site with an excellent mobile version, fast load times, and a good user experience gets a ranking bonus. There is a reason site speed is so important for SEO. And if your site is fast and works well on mobile but still does not get inquiries, the problem may be with conversion.
6 common mistakes on mobile sites
I see them constantly. Even on sites that are supposedly "responsive". The thing is, dropping in a viewport meta tag does not automatically mean your site works on a phone.
1.Buttons you cannot tap
Do you know how many times I have tried to tap "Contact us" and hit the link below it instead? Google requires at least 48x48 pixels for interactive elements and at least 8 pixels of spacing between them. Not because it is a whim, but because thumbs are thick.
2.Text that is only readable with zoom
If your mobile font is 10-11 pixels, people have to zoom in to read anything. The minimum for body text is 16px. That is not a suggestion - if the text is smaller, Google flags it as a Mobile Usability problem.
3.Slow loading from huge images
I see sites that serve 3000x2000 pixel images on a 375 pixel-wide screen. The phone downloads 2-3MB per image and then displays it at 375x250. The fix is simple - WebP format, correct sizes, lazy loading. More on speed.
4.Popups that block the screen
Google has been penalizing "intrusive interstitials" on mobile since 2017. If a newsletter popup covers the entire screen the moment a page opens - that is a problem for users and for rankings. Small banners at the bottom of the screen are fine. Full-screen popups are not.
5.Horizontal scrolling
Nothing screams "this site was not built for mobile" like a horizontal scroll. Usually the culprit is a table that is too wide, or an image with a fixed width. Easy to fix, but you have to notice it first.
6.The phone number is not clickable
This one personally annoys me. Someone is on a phone, sees your number, but cannot tap it to call. They have to copy it, open the phone app, paste it... Just add a tel: link. It takes 10 seconds.
What can you do about it?
Every site we build at Coding Turtles is designed mobile-first. We do not build a desktop version and then "shrink it down". We start with mobile and expand from there for bigger screens.
In concrete terms that includes:
- Next.js with automatic image optimization
WebP format, the right sizes for every screen, lazy loading by default
- 95-100 in PageSpeed Insights on mobile
Not 95 on desktop and 40 on mobile - 95+ on both
- Core Web Vitals in the green
LCP under 2 seconds, CLS under 0.05, INP under 100ms
- Testing on real devices
Not just in an emulator - we test on iPhone, Samsung, and different Android devices
If your current site has mobile issues, you do not need to rebuild it from scratch. Sometimes SEO optimization and technical work on the mobile version is enough. It depends on the situation - write to us and we will tell you honestly what is needed.
The bottom line
The mobile version of your site is not a "bonus". It IS your site, at least as far as Google is concerned. Most of your visitors are on a phone. Google only indexes the mobile version. Mobile Core Web Vitals decide your rankings.
If you have never checked what your site looks like on a phone - do it today. Open PageSpeed Insights, enter your URL, and see the mobile score. If it is under 50 - you have work to do. If it is over 90 - congratulations, you are the exception.
Sources
- Statcounter: Desktop vs Mobile vs Tablet Market Share Bulgaria (accessed June 2026)
- Google: Mobile-First Indexing Best Practices (accessed June 2026)
- Google Search Central: Mobile First Indexing is Here (October 2023) (accessed June 2026)
- web.dev: Core Web Vitals (LCP < 2.5s, CLS < 0.1, INP < 200ms) (accessed June 2026)
- Think with Google: Mobile Page Speed Benchmarks (accessed June 2026)
Frequently asked questions
Not sure how your site holds up on mobile?
Write to us and we will run a free check. You will get a specific list of issues and recommendations on what to fix - no strings attached.