Just last week, Google published the March 2017 Android security update, which fixed a slew of vulnerabilities in smartphones, as well as tablets and other Android devices. Now, AT&T is a bit behind, but they are at least sending out an update to a number of older Samsung devices. This update brings the February 2017 security patch to these devices. The ones in question are the Samsung Galaxy S5 Active, Galaxy Note 4 and Galaxy Note 5. While it's not the latest and greatest security patch, it's still great to see these getting updated, especially the Galaxy Note 4 which is now over 2 years old. The February 2017 security patch does include a number of vulnerability fixes, so it is important to still install the update.
The updates for all three devices are fairly small, weighing in at under 200MB for each smartphone. These updates really only patch some vulnerabilities, so you won't be getting any new features with this update or an update to the operating system. A bit unfortunate, but not surprising. This means that you do still need to allow the update to install on your device, so that you'll be protected from vulnerabilities and exploits. The update is a staged rollout, so it may take a few days before it actually lands on your device, but it shouldn't take too long as security updates usually have a bit more aggressive rollout than OS updates do.
For those with the Galaxy S5 Active, Galaxy Note 4 and the Galaxy Note 5, you can head into Settings, tap on "About Device" and then check for system updates. Since it is a fairly small update, you can download it over the mobile network, but it's still recommended to download over WiFi, as it'll likely be cheaper and of course use less data. Additionally, you'll want to make sure that your smartphone has at least 50% of its battery left, before attempting to update it. This way if the update takes longer than expected, your phone won't die in the middle of the update, which could become a real issue. You can learn more about this security update by hitting the source link below.