Mayor sets out next phase of 4G and 5G across Tube's West End stations

The video tutorial begins with a greeting and a check on whether participants are using their phones. It then moves into a discussion about video playback and the importance of choosing the right settings to avoid delays. The speaker acknowledges the participants and confirms that all functionalities are working fine. The session concludes with a reminder to close the session properly.

What was the speaker doing before the conversation?

How did the speaker express gratitude?