help needed to separate iphones with icloud
I recently gave my boyfriend my old iphone and even though he said he has logged out of my icloud i think the phones are still synced somehow. For example - I have his numbers on my phone and when he deleted my numbers from his new/my old phone they got deleted on my new one! i'm sure this is quite easy to fix but I just don't know how! please help. thanks!
iPhone 5s