first check if your theme is actually mobile-friendly by going to Appearance > Customize. Then, try clearing both your browser and WordPress cache—sometimes old data can mess things up. Next, turn off your plugins one by one to see if any are causing a conflict. If that doesn’t do it, use the Inspect tool to check for any JavaScript or CSS errors. If you're using AMP or a separate mobile theme, try disabling those to see if it fixes things. Test on a few different devices to rule out if it's just one phone or tablet acting up. You can also switch to a default WordPress theme like Twenty Twenty-One to check if the theme is the issue. And if all else fails, give your hosting provider a shout—it might be something server-related.