Welcome to iMore! You'll need to assign a photo to whomever is calling you in Contacts.
1. Open Contacts app
2. Open the contact whose picture you would like to appear when they call
3. Tap EDIT in the upper right hand corner of the contact card
4. Tap "add photo" in the circle in the upper left hand corner. You can then select an existing photo or take a new photo. If you have Facebook contacts synced to your Contacts their photo should appear automatically.
Their picture should now appear in the upper right hand corner of the screen whenever they call. If you're looking for the caller's picture to appear full screen when they call, I don't think there's a way to do that anymore.
11-16-2015 09:37 AM