a screenshot of the rules saying "if your out-of-term address has a TV Licence (for example, your parents’ or guardian’s home) this will cover you, provided you’re only watching on a device that’s powered solely by its own internal batteries (like your mobile phone, laptop or tablet) AND it isn’t connected to an aerial or plugged into the mains."
https://s3.masto.ai/media_attachments/files/111/115/691/680/819/092/original/8fcf5db1f710825d.png