Samsung launches new Bulid One UI 4 to fix Galaxy S21 series lag

A while back, Droidlime reported on the issues Samsung is facing regarding the arrival of the One UI 4 update based on Android 12 for the Galaxy S21 series. Yes indeed! A number of smartphone users, particularly in the US, have complained about the refresh rate dropping to 60 Hz after the update.

In fact, Samsung last week launched the One UI 4 update based on Android 12 and its presence was greeted with “rapt excitement” by users of the Samsung Galaxy S21 series. Samsung originally offered this update for users of the Galaxy S21, S21 + and S21 Ultra.

The One UI 4 update based on Android 12 also seems to cause problems, which end users of the Galaxy S21 series have their say and complain about the update. The problem is that if you select 120 Hz in Settings, the refresh rate will return to 60 Hz after the user stops touching the screen.

In light of this, the South Korean electronics giant also acknowledged the “screen lag” problem that plagued some Galaxy S21 series units, particularly in the United States, after upgrading to the stable iteration of One UI 4 based on Android 12.

So fast that Samsung completed repairs right away. The latest build from Samsung is G99xUSQU4BUK9 (where the “x” differs depending on the S21 family member the user belongs to) and will replace the previous G99xUSQU4BUK7 on cellular carrier models in the US.

For the time being, the latest build has also appeared on Verizon, of course not a few hope that the new build will soon reach other operator panels as well. Since the refresh rate switching bug mentioned above seems to mainly affect the Galaxy S21, S21 + and S21 Ultra units in the US.

It remains to be seen whether this software patch will be shipped worldwide in due course or not. People who have installed it report a big improvement in overall responsiveness on the device, although there still seems to be some scrolling in third-party apps.

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