The three plaintiffs in the case, Joy Backhaut, Adam Backhaut, and Kenneth Morris, switched from iPhones to Android phones in 2012. After the switch, texts sent from iPhones weren't being delivered to their Android phones. The problem was a major issue for iMessage which Apple wasn't able to fix until late 2014.
The three plaintiffs alleged that the undelivered texts constituted a violation of the Federal Wire Tap Act.
The case was made easier for Apple when it was discovered that two of the three plaintiffs had gotten rid of their old iPhones after they filed the suit. Thus, they were unable to demonstrate whether the texts sent to their number went to their Apple or Android devices.
Judge Lucy Koh decided for Apple with one sentence, "The Court has granted the Motion for Summary Judgement filed by Defendant Apple Inc."
[via Business Insider]