AT&T is rolling out new updates for two Samsung and two LG phones that bring new Android security patches and fixes to various known issues, including Spectre and Meltdown, KRACK and Blueborne, among others.

The Android Marshmallow-powered Samsung Galaxy Express 3 with model number SM-J120A is now receiving an update with software version J120AUCS5ARA1. The update weighs 19.2MB and besides installing fixes for Spectre and Meltdown, it also installs January’s Android security patch.

The same security patch and fixes are also rolling out to the Galaxy S7 Active, which is still running Android 7.0 Nougat. The update weighs 36.8MB and carries software version G891AUCS2BRA7, but you must be on the previous version G891AUCS2BQL6 in order to qualify to install the latest version.

If you are using the LG G5, AT&T is rolling out an update that installs software version H82020r and weighs 61.4MB. The LG G5 will be bumped to January 1, 2018 security patch level, which is still based on Android 7.0 Nougat.

As for the LG K10 (K425), which also runs Android 7.0 Nougat, the latest update not only installs the January 2018 security patch, but it also brings KRACK and Blueborne fixes. Like the others, the update is not heavy at 35MB and it installs software version K42520g.

AT&T is rolling out the updates over the air, which means it’ll take some time before all units get the OTA notification. Rather than wait, you can always try a manual update via the Settings > About phone menu, but make sure you have a stable Wi-Fi connection and your phone’s battery is at least 50% charged.