Try mo ito sir
via recovery mode,,
click power botton,vollume up,home button,,
dapat sabay lahat,and then makikita mo na yung recovery mode,
follow my instruction,
1.click wipe data factory reset,by using vollume up and down,click yes,by power button,
2.wipe cache partition,click yes by vollume down,click power button
3.go to advance using vollume down,click power button
4.wipe dalvic cahe,click yes ,by power button.
5.reboot system now,,pag stock padin sa logo,,tanggalin mo yung battery,and then balik mo,,open mo ulit
,,,feedback ka ulit,,,