According to a Reddit thread, some overseas users of Xiaomi phones are experiencing problems with touch screen response, and the touch screen sometimes fails. XDA also reported the same problem, testing the Mi 11 Ultra with a MIUI 12.5, and the touch screen response was patchiness.
The phones reportedly experiencing touchscreen response problems include the Mi 11, Mi 11 Ultra, Mi 11 Lite, Mi 10 Ultra, Mi 10T Pro, Redmi Note 10 Pro, and Redmi Note 9S.
It’s not clear if this is a problem with MIUI 12.5, as some users have reported that MIUI 12.0.8 also has a touch screen response failure. The problem is not a universal one, only a few users encounter it, and as a result, XDA editors do.
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Xiaomi has officially responded to XDA, saying it is aware of the issue and will issue a fix and update for these models.