Hi people , i have one question , and sorry that's the guestion nothing to do with wazapp But is there a app for the N9 for battery calibration...?? i have my N9 1 year and when i charged it's not totaly charged to 100% when i put out my charger ( when i said it's fully 100% ) then he gives 92% in the display , when i put it back in the charged 100% have anybody her the same problem ??? And can i fix it....??