In Angry Birds for Android, I’ve noticed that the advertising banner can cause major lag on some levels, almost to the point that playing is almost completely infective.
I have found a way to temporarily disable the advertising banner so to help you complete the level however. When you’re on a level and the advertising banner pops down, click the menu button and go back to the level select screen. You’ll notice that the advertising banner is hidden on the level select screen. If you quickly tap the level you want to play, the advertising banner will be gone temporarily.
The banner will come back the next time you retry the level, so you’ll need to keep doing this in order to play without the banner.
