Another December 2021 Update Rolls Out For The Samsung Galaxy S21

Samsung Galaxy S21 Ultra AH 05

According to the latest report by SamMobile, a few weeks after rolling out the stable Android 12 One UI 4.0 update for the Galaxy S21 series, Samsung is back again with another update for the device.

Notably, it is another December 2021 update for the Galaxy S21. This update is aimed at resolving the issues users faced after the installation of the Android 12 One UI 4.0 update on their Galaxy S21 units.

Apparently, this update is a sort of hotfix update, which fixes these issues. Do note that the December patch was already rolled out for the Galaxy S21 devices earlier this month.


So, this new update doesn’t bring a new security patch. However, as per the official changelog, it promises to fix some bugs and improve the performance and stability of the system.

Well, this doesn’t mean that the update does not fix the issues users were having. Often Samsung does not officially include any information related to bug fixes with its update.

As noted by SamMobile, the update is currently live for users of Galaxy S21 in India. So, if you are a Galaxy S21 user living in India, you might have already received the update notification.


This Galaxy S21 December 2021 update arrives with firmware G99xBXXS3BULC

Talking about the update, it arrives with firmware version G99xBXXS3BULC. The entire Galaxy S21 lineup, which includes the Galaxy S21, Galaxy S21+, and the Galaxy S21 Ultra, are the recipient of this update.

The size of the update is 353.96 MB. We recommend you download the update over a stable Wi-Fi or mobile data connection to avoid any issues.

As usual, the update is rolling out via OTA in batches. Meaning it won’t be live for every device at once. The rollout process gradually. If you haven’t received the update notification, do not worry, as you can manually check for it as well.


In order to do so, simply head over to Settings » Software update and tap on Download and install. The system will start searching for a new update on its official server, and if it detects one, the device will prompt you to install the update.

Recently, Samsung is already pushing the Android 12 based One UI 4.0 update for more high-end smartphones. This includes the Galaxy Z Fold 2, Galaxy Z Fold 3, and the Galaxy Z Flip 3. The update is available in a few countries but is expected to be available in more regions in the coming days. Mid-range phones will join the bandwagon soon.

galaxy s21 december update