(FILES) In this file photo taken on August 27, 2025 a football fan uses a mobile phone with the logo of Borussia Dortmund on its cover to take a photo prior to a German Cup (DFB Pokal) football match in Wiesbaden, western Germany. Borussia Dortmund have put in place an incentive scheme aimed at curbing in-stadium phone usage. Called 'fan mode', the scheme offers prizes for fans who do not switch on their phones during games. (Photo by Kirill KUDRYAVTSEV / AFP via Getty Images) / DFB REGULATIONS PROHIBIT ANY USE OF PHOTOGRAPHS AS IMAGE SEQUENCES AND QUASI-VIDEO.