How to stop "Make your phone more social" prompts?
Since a few days I have Alcatel Pop C3 and also experienced this annoying notification keeping reappearing. I didn't want it to have access to my Facebook account details.
As a result of many attempts I've figured out that it comes from default launcher. After I've installed ADW Launcher – you probably can choose any other from Play Store – the notification never showed up again :)

I hope will turn out to be helpful for someone!