“The deals were part of an effort to push more mobile users onto the social network starting in 2007, before stand-alone Facebook apps worked well on phones. The agreements allowed device makers to offer some Facebook features, such as address books, “like” buttons and status updates.
Facebook officials said the agreements with the Chinese companies allowed them access similar to what was offered to BlackBerry, which could retrieve detailed information on both device users and all of their friends — including religious and political leanings, work and education history and relationship status.
Huawei used its private access to feed a “social phone” app that let users view messages and social media accounts in one place, according to the officials.
Facebook representatives said the data shared with Huawei stayed on its phones, not the company’s servers.”