Back in April, T-Mobile temporarily put on hold the roll out of a Galaxy S9/S9+ security update over bootloops. Sadly, neither the roll out resumed, nor a new update arrived. However, there's good news for users now: the carrier has started pushing out a new update. As you can see in the screenshots above, it's a security update that brings along Android fixes for the month of June. The roll out has just begun, so it may take time for the update notification to pop up on your device's screen. Aside from T-Mobile, there are reports that Sprint and AT&T have also started pushing out...
Source: https://www.gsmarena.com/samsung_galaxy_s9_s9_on_tmobile_getting_new_update-news-31807.php
