This alone won't be sufficient. I have a fake FB account which I haven't used in ages, which has only been accessed from my laptop. Somehow they managed to tie

This alone won't be sufficient. I have a fake FB account which I haven't used in ages, which has only been accessed from my laptop. Somehow they managed to tie the fake account to my mobile device. I suspect they are using the apps that are constantly pinging graph.facebook.com to build a comprehensive profile of devices and accounts. When I was visiting a foreign country I began receiving emails from facebook to try and get me to login, with FB marketplace results customized for the region I was in... this was very concerning and shows they are not only collecting vast amounts of data, but they have a good mechanism in place for persistent tracking of devices & users all over the planet