You can also try dr.fone - Android Lock Screen Removal to bypass pattern, PIN, password & fingerprints for Android devices with NO DATA LOSS: https://goo.gl/sEpYPY
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If you forgot your screen lock combination follow these steps.
1.Power off your phone
2.Press together volume up + home button + power button until the phone vibrates
3.Choose with volume buttons "wipe data/factory reset" and select it with power button
4.Choose "yes" with volume buttons and select it with power button
5.Wait untiil format is complete
7.Wait until the phone restarts
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Warning! Do this at your own risk! All your phone data (contacts,photos,videos,music,messages,aplications,games,files,) will be lost! Please make backup first if you can!
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