UberSync

Synchronize profile pictures for your Facebook friends on Android.

To configure, add the account or check status, go to "Settings => Accounts".
Depending on how many friends you have, the first import might take a while, so be patient.

***IMPORTANT***
Starting with Facebook API v2.0, the friend list returned by Facebook includes ONLY users that authorized this app.
That means it will only sync users that also use this app or if they manually authorized this app to read it's profile.
If you want to sync the pictures of people who did not (and most didn't), the only way is to ask them to authorize it.
You can share them this link (https://contact-sync.weednet.ro) or to use the Invite button from the app.
No trick and no way around it. Really!
They don't need to use the actual Android app, just to grant the authorization to get their picture.