The trick is not to do it quickly but touch the IPad twice at the same place.
To practice this "twice touch", do it on the map. If you don't touch twice at the same place you will be able to see it because the square view will move and if you succeed you will be back to the game where you touched. You can also use this "twice touch" on a character's portrait to center the view on this character
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To practice this "twice touch", do it on the map. If you don't touch twice at the same place you will be able to see it because the square view will move and if you succeed you will be back to the game where you touched.
You can also use this "twice touch" on a character's portrait to center the view on this character