SamMobile has affiliate and sponsored partnerships. If you buy something through one of these links, we may earn a commission.

News For You
News For You
Notifications

Galaxy S21’s carrier-locked variant is getting the August 2021 security update

Firmware
By 

Last updated: August 4th, 2021 at 14:07 UTC+02:00

Five days ago, Samsung started rolling out the August 2021 security update to the Galaxy S21 series in China. Earlier today, the company released it to the international variants of the Galaxy S21. Now, the carrier-locked units in the Galaxy S21 series have started getting a new update.

Samsung has released a new software update to the Galaxy S21, Galaxy S21+, and the Galaxy S21 Ultra on Xfinity Mobile's network in the US. The software has firmware version G99xUSQU4AUGE and includes the August 2021 security patch. The company has explained on its website that its latest security patch fixes 40 privacy and security-related vulnerabilities. The update might not include any new features or user-facing UI changes.

If you are a Galaxy S21, Galaxy S21+, or Galaxy S21 Ultra user on Xfinity Mobile's network in the US, you can check for the update by navigating to Settings » Software update and tapping on Download and install. You can also choose to flash the firmware manually after downloading the latest firmware file from our firmware database.

Samsung is expected to release the update to Galaxy S21 series devices on more US networks over the next few days. The phones were launched earlier this year with Android 11-based One UI 3.1. They have been getting monthly security updates since their release. The phones will get three major Android OS updates, which will take them to Android 14 towards the end of their lifecycle.

FirmwarePhone Galaxy S21Galaxy S21 PlusGalaxy S21 Ultra
Galaxy AI summarized

Scroll for more related content
News For You

You might also like

Galaxy S21 series gets Samsung’s October 2024 security update

Galaxy S21 series gets Samsung’s October 2024 security update

Samsung's October 2024 security update is rolling out to the Galaxy S21 lineup. The update hit the Galaxy S24 series in early October, and since then, it has been making its way to older Galaxy S flagships in descending order. Now, Galaxy S21, S21+, and S21 Ultra owners in some European markets and the USA […]

  • By Abhijeet Mishra
  • 4 weeks ago
Samsung monthly updates: October 2024 security patch details are out

Samsung monthly updates: October 2024 security patch details are out

Hot on the heels of the first official One UI 7.0 teaser, Samsung has detailed the latest security patch for Galaxy smartphones and tablets. The October security patch brings fewer fixes than the previous few patches that preceded it. The October 2024 patch fixes 30 security flaws in the Android operating system and 12 that […]

  • By Abhijeet Mishra
  • 1 month ago
Full One UI 6.1.1 update changelog for pre-2022 Galaxy devices

Full One UI 6.1.1 update changelog for pre-2022 Galaxy devices

The first day of October brought with it the rollout of the Samsung One UI 6.1.1 update for Galaxy devices launched before 2022. In September, Samsung pushed One UI 6.1.1 to eligible phones and tablets launched in 2022-2024, and now, it has turned its attention towards older devices. As was the case earlier this year […]

  • By Abhijeet Mishra
  • 1 month ago
Galaxy S21’s September 2024 security update is now live in more regions

Galaxy S21’s September 2024 security update is now live in more regions

Almost ten days after releasing a software update with the September 2024 security patch to the factory-unlocked and carrier-locked variants of the Galaxy S21, Galaxy S21+, and the Galaxy S21 Ultra, Samsung is finally rolling out the same update to the international variants of the three smartphones, which have model numbers SM-G991B, SM-G996B, and SM-G998B. […]

  • By Abid Iqbal Shaik
  • 2 months ago
September 2024 security update out now for Galaxy S21 in the USA

September 2024 security update out now for Galaxy S21 in the USA

Samsung has released the September 2024 security update to the factory-unlocked units of Galaxy S21 series devices in the USA. The update was released for the global variants last week and for the carrier-locked Galaxy S21 units yesterday. Factory-unlocked Galaxy S21 gets September 2024 security update in USA The latest software update for the Galaxy […]

  • By Asif Iqbal Shaik
  • 2 months ago
Galaxy S21’s September 2024 security update reaches USA

Galaxy S21’s September 2024 security update reaches USA

Last week, Samsung released an update to the international variants of the Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra. It brought the September 2024 security patch to these phones. Now, the company is rolling out an update with the same security patch to the carrier-locked variants of these smartphones for the US. So far, […]

  • By Abid Iqbal Shaik
  • 2 months ago