Apple has been found to be in violation of a Samsung patent, which has resulted in a limited import ban on certain products, including the iPhone 4, iPhone 3GS, original iPad 3G and iPad 2 3G, all only for AT&T-specific models. More details are emerging about the ruling, but it’s likely this affects only older devices on AT&T because it relates to a specific component used before wider release of the iPhone with multi-band support.