Īs part of the promotional efforts, Kit Kat bars in the shape of the Android robot logo were produced, while Hershey ran a contest in the United States with prizes of Nexus 7 tablets and Google Play Store credit.

The partnership was not revealed publicly, or even to other Google employees and Android developers (who otherwise continued to internally refer to the OS as 'KLP'), until its official announcement in September. Lagerling phoned a representative of Nestlé, who owns the Kit Kat brand and produces the confectionary (outside the United States, where it is produced by The Hershey Company under license), and quickly reached a preliminary deal for a promotional collaboration between the two companies, later finalized in a meeting at Mobile World Congress in February 2013. Aiming for a codename that was 'fun and unexpected', his team pursued the possibility of naming the release 'KitKat' instead. The release was internally codenamed ' Key lime pie' John Lagerling, director of Android global partnerships, and his team, decided to drop the name, arguing that 'very few people actually know the taste of a key lime pie'. Android 4.4 ' KitKat' was officially announced on September 3, 2013.

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