I am using Xiaomi 12 5G from about 1 year and my experience is mostly good. The phone is very fast, apps open quickly and games also run smooth. I play Free Fire almost daily and it works fine without lag. The display is very bright and colors look nice. For online classes also it worked good.
But I have also seen some problems. Many people including me faced recording issue, like sometimes screen recorder or call recorder doesn’t work properly. Camera was excellent in starting, but after some months the quality is little down specially in night photos. Battery drains faster while gaming and mobile heats if I use it long time.