The Teams mobile clients (iOS and Android) benefit from a reduced data usage mode during video calls. The new mode can cut the amount of cellular data consumed significantly. We ran a simple test of a ten-minute meeting involving a shared PowerPoint slideshow and saw data usage reduce by 71%. That’s not a bad outcome!
https://office365itpros.com/2021/03/12/reduced-data-usage-mode-teams-mobile-clients/
