Make a call | Chapter 1 - Berlin, Germany Secret Files 3 Guide
Last update: 11 May 2016
Examine the cell phone in the inventory. Unfortunately it is locked - without 4 digits PIN code you can't use it. So you have to look for this code.
So use the key to open the closed desk drawer on the left and examine its contents. Nina will find inside a plan of a Turkish city named Urfa, photos of ancient cult place located nearby the city and a book on Göbekli Tepe. Click on these items (RMB in the drawer or in the inventory), to get further information.
Once you take all items from the drawer, it turns out that there is a number on its bottom: 0504. Probably it is the PIN code to the just found cell phone.
So enter the PIN on the cell phone keyboard after zooming it in the inventory with RMB (once you enter it, commit the PIN with "OK" button). Nina will find that there are neither phone numbers nor messages left in the phone. Fortunately someone has left the message on the voice mail. This is Turkish Max's coworker - Emre Dardogan. After listening to the message, Nina decides to go to Turkey.