Showing Ads on iPhone

Whenever I set up a new campaign I go in to Edit Campaign Settings. Part of editing the campaign settings is choosing where you want your ads to show. I don’t remember how long back I started seeing the option for iphone and mobile browsers, but I always uncheck it. I don’t know who does turn it off and who doesn’t or why people do, but I do turn it off.

The reason I turn it off is because the ads are so tiny, and I don’t feel like I am getting the same from my ads that show on mobile browsers. For me it is more difficult to make a purchase on a mobile browser and I don’t want my ads showing for them. On the other hand, am I completely wrong?

I can see these ads maybe working if they are short form CPA offers, like email or zip offers, but not for full blown purchases. Has anyone seen a super affiliate discuss this? If you have, can you share, or at least comment below?