How to stop "Make your phone more social" prompts? Alcatel One Touch 983, firmware version 2.3.7.
I am frequently interrupted with a black screen displaying this prompt:

Make your phone more social
Authorize the synchronizing which will make it easier for you to connect more with friends, share photos and links, and receive event reminders and notifications.
Allow Skip

At first I thought it was Facebook, but then found that it was continuing after I killed the Facebook app. Moreover, it seems to stop when I switch my phone off and on again, but I don't know what's triggering it to start doing it again. Once started, it will sometimes pop up at minutely intervals, whether I tap Allow or Skip.
I'm not sure what it's actually doing. In any case, what can I do to stop this frequent interruption? A way to stop it for good would be preferable, but failing that, I would welcome advice on how to stop it for the time being without having to shut my phone down and possibly lose something I'm in the middle of doing.
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!