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  1. Y

    setting default pdf application

    I didn't know that Xiaomi.eu didn't have the option to disable "MIUI optimization", but however it works on the official rom.
  2. Y

    setting default pdf application

    You can to disable "MIUI optimization" from "Developer options", then you must open a pdf file and choose your default application, after you set you default app, I would recommend enabling "MIUI optimization" to avoid bugs in your phone. sorry my bad english, I am from Brasil