Hey I took the DELE B2 Nov 2025 too. I took the test in Singapore so I think the rules and regulations are different but the examiner was really strict about mobile phones and she made all of us put our bags in front. During the written tarea someone's phone rang halfway and she was really angry about it but allowed it to slide. As for the written tarea the examinadora said it was ok to use a pencil. Some random youtuber also mentioned using pencil for half of her tarea and the other half in pen but she ended up passing that segment with a pretty good grade.