While there have been bug reports compared to what we see after a major upgrade by Xiaomi in the past, a few frustrating issues have surfaced in the last few weeks. It seems the Redmi Note 12S users are taking the hit, as many problems are being reported by the device owners.

Recently, Xiaomi confirmed they have supposedly fixed the green line issue on the phone’s display. They have also confirmed resolving the screen blinking bug experienced by users when using their devices. We understand the problem is exclusive to a few people, global ROM users, to be precise. If you are on OS2.0.1.0. VHZMIXM build, you need to install the latest update.
According to the latest HyperOS weekly bug report, the Redmi Note 12S screen blinking issue has been resolved. Unfortunately, they did not say how the problem was fixed, but we believe they are rolling out a new software update. We recommend installing it if you are having any issues with your device.
How did Xiaomi resolve the Redmi Note 12S screen blinking issue?
Xiaomi launched the Redmi Note 12S with a 90hz refresh rate display. It is designed to adjust itself depending on what is on the display. Perhaps a bug made the change visible, and probably what users are reporting as their display blinking. Nevertheless, Xiaomi has supposedly resolved it, but you need to install the latest update.