Thank you for your feedback! Contextual search within a specific chat or channel, filter options for messages, files and people are all available in the product today.
To learn more, please visit https://support.microsoft.com/office/search-for-messages-and-more-in-teams-4a351520-33f4-42ab-a5ee-5fc0ab88b263.
We are happy to inform you that you are able to join meetings by choosing “Call me” from the join dropdown on iOS & Android. To use this feature, you need to provide a phone number where you can receive a phone call. If the call is accepted, your meeting audio will switch to the cellular connection. Your personal and work phone numbers, if added to your account, will be available for selection automatically.
The team is working to release this feature for Desktop. I don’t have dates to share at this time, but will keep you posted.