Why is Google Calendar making me sign in all the time on my iPhone 6?

Episode 1168 (35:33)

Bill from Carlsbad, CA
Apple iPhone 6

Bill bought an iPhone 6 and he's had a few issues with it. He's having issues with Google Calendar asking him to re-enter his credentials every time he wants to see his calendar. Leo says to go to Mail, Contacts and Calendars in the phone's settings and add his Google account there. He should check what services he wants, and then he won't ever have to log into it again.