Flick, flick, flick, flick! That’s the sound of the user’s finger scrolling through your long mobile landing page. Eventually, they’ll get flick fatigue and abandon your page if they don’t see the call-to-action button.
The user’s attention and energy are finite resources. Once it exceeds a certain point, they’ll call it quits and move on. If they can’t tap your call-to-action button when they’re ready, you could lose them as potential customers.
There’s nothing wrong with a long mobile landing page. It’s what naturally happens when you condense content to fit the width of a mobile viewport. The problem is the call-to-action button buried at the bottom of the page. When users are ready to act, it’s nowhere to be found.