The schedule should be viewable on a mobile device. But there are also alternative exports you can use to consume it from another application.
The Schedule is available through an XML feed. You can use ConfClerk in Debian to consume this, or Giggity on Android.
- Home page: https://gaa.st/giggity
- F-Droid: https://f-droid.org/repository/browse/?fdid=net.gaast.giggity
- Google Play Store: https://play.google.com/store/apps/details?id=net.gaast.giggity
# apt install confclerk
The schedule is available through an iCalendar (ical) feed. Your calendar application should be able to consume this.
iCalendar Feed: https://debconf21.debconf.org/schedule/schedule.ics