How To Bypass Smartphone Lock Screen

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Samsung Galaxy Note2 and S3

Samsung Galaxy Note2

Security specialist Terence Eden explained in his blog that unauthorized users can press the “emergency call” and the “in case of an emergency” (ICE) contact list buttons and hold down the home button at the same time to cause the device’s home screen to pop up. From there a user can touch an app and gain access to it.

Steps:

1.     Lock the device with a "secure" pattern, PIN, or password.
2.     Activate the screen.
3.     Press "Emergency Call".
4.     Press the "ICE" button on the bottom left.
5.     Hold down the physical home key for a few seconds and then release.
6.     The phone's home screen will be displayed - briefly.
7.     While the home screen is displayed, click on an app or a widget.
8.     The app or widget will launch.
9.     If the widget is "direct dial" the phone will start ringing.
   

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 How to bypass the Lock screen Samsung Galaxy S3

The bug was discovered by Sean McMillan

Steps:

1) On the code entry screen press Emergency Call
2) Then press Emergency Contacts
3) Press the Home button once
4) Just after pressing the Home button press the power button quickly
5) If successful, pressing the power button again will
bring you to the S3's home screen

McMillan said that it can "take quite a few attempts to get this working, sometimes this method works straight away, other times it can take more than 20 attempts."