The most popular mobile Samsung S20

 The rollout of the September 2021 update to Galaxy devices began on August 30, exactly a week before the first Monday of the month when Google normally releases the list of core security issues in the patch. This month, things were delayed even further, however, due to Labor Day in the United States taking place on that Monday, September 6.

On the Samsung-specific side of things though, two notable changes may be coming with this September 2021 update, for some devices. For starters, earlier this year, Google promised that an issue between Galaxy devices and Android Auto would be fixed by the July security patch. However, this ended up falling through, with the fix not set to arrive until September’s “maintenance” release. Now that the update is more widely available, we’re actively investigating to see if the Android Auto issues have been fixed.

Meanwhile, some devices, including the Galaxy S20 FE and Galaxy Z Fold, are receiving an upgrade to One UI alongside the September 2021 update. Phones that get the upgrade gain the (admittedly limited) benefits of One UI 3.1.1, including tweaks to the phone app and a new bedtime mode toggle in quick settings, though some improvements may be device-specific.

According to Samsung’s official patch notes, Google’s Android Security Bulletin includes 3 critical fixes, 29 high severity fixes, and 14 moderate ones. On top of that, Samsung themselves have closed 23 security vulnerabilities with the September 2021 update.