What text message do I send to buy an ticket or day ticket via sms? Which operators can I buy a ticket or day ticket via sms from? What should I do if the remaining time of my ticket via SMS has expired? Which mobile operators offer tickets and day tickets via sms? Can I buy an ticket or day ticket via sms after I have boarded the bus or tram? What if the mobile network is not working or my battery is empty when I want to buy an SMS ticket? Can an ticket of day ticket via sms be forwarded? Why is it not possible to buy an SMS ticket? Can I purchase tickets or day tickets via sms if I have a business contract for my mobile phone?