T-Mobile is currently busy rolling out a new software update for both the Samsung Galaxy S7 and the S7 edge. Unfortunately this will not make either device run Android 8.0 Oreo - that update will probably arrive next year. In the meantime, however, you can take advantage of the newest security fixes. And that's exactly what the new software release for T-Mobile brings. Upon installing the update on your S7 or S7 edge, you'll be on the November 1, 2017 security patch level. As T-Mobile hasn't yet updated its support pages to reflect the availability of this update, there's no official...
Source: https://www.gsmarena.com/tmobiles_galaxy_s7_and_s7_edge_are_now_receiving_the_november_security_update-news-28328.php
