Can I redeem promotional codes? Michael Rieder August 21, 2021 04:36 Updated Yes, promo codes of the BLS Mobil app can be redeemed in the app. Related articles What do I have to do during a ticket inspection? When will I receive each receipt? Which payment methods can I use for purchasing tickets with the BLS Mobil app? Is check-in/check-out valid for mountain transport? What happens in case of a smartphone failure?