Many people notice that their ads behave differently on mobile and desktop because people use each device in a different way. Mobile users often scroll quickly, tap fast, and decide based on what they see in a short moment. Desktop users usually stay longer, read more, and move their cursor around before clicking. Your ad design, text size, and landing page might look great on a big screen but feel cramped on a phone. Connection speed can also affect loading time, which changes how many people stay on your page. Adjusting the layout for each device can make a big difference. What do you think?