At the S-Bahn Customer Center at Berlin Friedrichstrasse Station, the focus is on personalized and individual assistance. You can access the full range of S-Bahn services here:
Advice on fare options and sales of VBB tickets
Advice on and processing of S-Bahn passes
Sales of S-Bahn souvenirs
Customized schedule information (including during service disruptions)
Sales of nationwide local transit tickets and DB subscription service