User settings › Notifications has Reactions to your messages: Everywhere, Direct messages only (the default) or Off. Reactions to one message share one notification, a reaction taken back and added again rings once, and nobody you blocked or ignore, nor a room you can no longer see, sends you one.
In a voice room on a phone turned on its side with a large text size, people are listed as rows with their face beside their name, in two columns where they fit, and the controls keep clear of the screen’s edges. Linked roles can ask for a verified connected account before a perk is taken.