Building 8 data was shared with Haewei…
https://www.vox.com/technology/2018/6/6/17433802/facebook-data-privacy-huawei-china
They were working on a facebook phone,
https://www.cnet.com/news/facebook-building-8-hires-phone-experts-nascent-objects/
Heawei cell network
They share with Google too, google already has a phone
They were working on mind reading through your skin at building 8
https://www.businessinsider.com/facebook-building-8-prototype-device-lets-you-hear-through-skin-study-2018-10