One of the nice features of the iPhone and iPad is the ability to see a photo of your contacts, such as when a call is coming in. You can manually add a photo to a contact by tapping Edit and then tapping Add Photo. Doing so lets you either select a photo you already have on your device or take a photo of the person on the spot. However, there's a much faster way. With just a couple taps you can add photos from all your Facebook friends to your contacts.
To add photos from your Facebook friends to your contacts on your iPhone or iPad, you first need to have the Facebook app installed on your device. If you have the app, go to Settings > Facebook and toggle Contacts to the on position.
If you have the Twitter app installed, you can also add photos from your Twitter contacts.
Then tap on Update All Contacts.
This will temporarily give Facebook contact information for your friends. Then for all those contacts on your device who are also Facebook friends, their profile photo will be added to their contact information on your iPhone or iPad.