Da dove l'ho comprato e usando root checker mi dicono che non è rootato ; avevo letto una discussione in un forum americano che dice così "Miui phones don't have root permissions anymore, if you are on a stable build it tells you that you have to switch to the developer edition in order to get root permissions. In the past it was as simple as going to Tools->Permission Manager, not anymore it was removed since the say it can lead to instability." non ci capisco più niente >.<