My iPhone won't switch Facebook accounts?

[Stephanie]

I am using my sister's old iPhone 4 and she already had the Facebook app installed, so I just logged her out and signed myself in. There's no problem there, but the problem is that every time I try to play an app that you can sign in with Facebook, for example Candy Crush, It automatically logs in as her even if she's never played the game. I don't have to constantly switch accounts on Facebook, I'm always automatically logged in. Can someone please tell me how to get my Facebook profile to show up instead of my sister's? Thank you

[agreeablehydrant685]

maybe her old account with her information still on the old phone ? if you log her out you shouldnt rush to log into the account because that will make alike facebook wont know familar who is logging onto her fb account . she need to deleted her fb account from the old iphone before she planning to let you have and use iphone .you should double check see there nothing information about your sister in the phone when you log in the fb. sometimes its hard to play games when youre using the cell phone. plus when your o the phone and playing fb games will charge you more money. you notices that on facebook include does charge their games on the android cellphones plugging ? the bills counts include with your phone company same time. plus be careful with your dated on your phone when youre loging online .facebook android counts your phone mintues whenever you doing on facebook.