I was given an IPhone 4s. How do I delete the previous owners data (pictures, emails, etc.)?

[iMore Question]

Would like to delete her info so I can add mine.

 

[Sherry_B]

Welcome to iMore

Did the previous owner unlink the phone from their Apple account? Generally before you sell/give away an iPhone everything in this guide must be followed;

https://support.apple.com/en-us/HT201351