Search engines primarily use the mobile version of your site for indexing and ranking, which means your mobile experience is your real SEO baseline.
Match Content Across Versions
If your mobile site hides or shortens content that appears on desktop, you're effectively hiding that content from search engines.
Check Tap Targets and Layout
Buttons and links that are too small or too close together hurt usability scores and frustrate mobile visitors.
Test on Real Devices
Simulators are useful, but testing on an actual phone over a real mobile connection catches issues emulators miss.
Next step: Use the Screen Resolution Simulator to preview how your layout holds up across different device sizes.