#WTF In Android notifications:
Google Play services : Add phone number to keep your account up to date.
You're on my phone and know more about me than I do - why ask (again) for my phone #. Second, im not sure I want to give yet another piece of info for more targeted ads
Hi Heri. For security purposes, you may sometimes need to verify an account by phone before signing in. More info: http://goo.gl/WQyf0R . Hope this helps.