FAQ: Validate with your phone or smartwatchSummaryValidate your journey Go to Validate your journeySpecial situations during the trip Go to Special situations during the tripControl and regularity of the ticket Go to Control and regularity of the ticketValidate your journeyHow do I validate with my Android phone or Samsung Galaxy Watch?How do I validate with my iPhone or Apple Watch?What is Express Transit mode on iPhone and Apple Watch? How do I turn it on or off?I have a valid ticket on my phone/smartwatch, but I'm having trouble validatingI can no longer validate with my Android phone or smartwatchSpecial situations during the tripCan I travel if my Android phone runs out of battery?Can I travel if my iPhone runs out of battery?If the input validation was impossible because all the validators were HS, what will happen?I have been charged several t+ tickets on a journeyControl and regularity of the ticketWhat do I need to present during an inspection?I have exceeded the validity period of my ticket, what will happen if I meet a control officer?