Game Center not appearing in new phone (iPhone 6s)

Hi @TLB_Default - I moved your post to a new thread, as the one you replied to was quite old. (I also adjusted the title to better reflect the question)

The standalone app for Game Center was removed in iOS 10, but you can still save and access your city from Game Center within SimCity BuildIt. 

First, install SCBI on your phone and play through the tutorial until the City Advisor tells you "You're on your own". Then tap the Settings button and login to Game Center with the correct account. That will get you to your saved city. More info here: https://help.ea.com/en/help/simcity/simcity-buildit/save-your-city-and-progress-in-simcity-buildit/

Happy building!

@BlackjackWidow After I finish the tutorial in SCBI I go into settings and there is no option to log into Game Center

@TLB_Default - Did you save your city to Game Center on the previous phone? Do you still have the old phone to check and make sure? If you do, you can always log into Facebook and save it there, too.

The only other thing I can think of is if you have a child account, you would not be able to save your city online at all (or use any of the online features). In your city, were you able to use the Global Trade HQ?