My App Looks Terrible on Phones
Your app or website looks great on a computer, but when you or your customers open it on a phone, it's a disaster. Text is tiny and unreadable, content spills off the edges of the screen, menus overlap with other elements, or you have to pinch and zoom just to use it.
This is a huge problem because more than half of all internet traffic comes from phones. If your app doesn't work on mobile, you're turning away the majority of your potential users or customers. They'll leave and never come back.
AI tools often generate apps that look great on a desktop monitor but weren't properly tested or designed for smaller screens. The good news is that most mobile layout problems can be fixed without redesigning the entire app.
Error Messages You Might See
Common Causes
- Missing viewport tag — Your app's HTML is missing a small piece of code that tells phones how to display it, so the phone shows the desktop version shrunken down
- Fixed-width layouts — Elements are set to exact pixel sizes (like 1200px wide) instead of adapting to the screen size
- No mobile-friendly design rules — The CSS (styling code) doesn't include any adjustments for smaller screens
- Images too large — Big desktop images don't resize on mobile, causing horizontal scrolling
- AI prioritized desktop — The AI tool built the desktop version first and didn't properly adapt it for mobile
How to Fix It
- Test on a real phone — Open your website on your actual phone to see exactly what users experience. Screenshots from desktop tools can miss real issues
- Use your browser's mobile preview — On your computer, press F12 then click the phone/tablet icon to preview how the site looks on different phones
- Ask a developer to add responsive design — A developer can add the viewport tag and mobile-friendly CSS rules to make your layout adapt to any screen size
- Check that images are responsive — All images should have max-width: 100% so they shrink to fit the screen instead of overflowing
- Test the most important pages first — Focus on fixing the homepage, product pages, and checkout flow for mobile before worrying about less-visited pages
Real developers can help you.
legrab
I'll fill this later
Matthew Butler
Systems Development Engineer @ Amazon Web Services
Taufan
I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms.
Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact.
Tejas Chokhawala
Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript.
Focused on performance, clean architecture and shipping fast.
Experienced with Supabase/Postgres backends, Stripe billing, and building AI-assisted developer tools.
Nam Tran
10 years as fullstack developer
Bastien Labelle
Full stack dev w/ 20+ years of experience
hanson1014
Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround.
Basel Issmail
’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems.
My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale.
In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals.
I enjoy working with startups and product teams where I can contribute both as a hands-on engineer and as a technical partner in designing and delivering impactful software.
Kingsley Omage
Fullstack software engineer passionate about AI Agents, blockchain, LLMs.
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Describe what's wrong in plain English. No technical knowledge needed.
Get HelpFrequently Asked Questions
Why does it look fine on my computer but not my phone?
Computer screens are typically 1200-1920 pixels wide, while phones are only 375-430 pixels wide. If your app was built for the wider screen without rules for adapting to smaller screens, it will look squished or require scrolling on a phone.
Will fixing the mobile layout affect how it looks on desktop?
No, if done properly. Responsive design uses conditional rules — mobile devices get one layout, tablets get another, and desktops keep the original. A developer can add mobile rules without changing anything on desktop.