How to unlock android phone through ADB

Tested in Nexus 5:

adb shell input keyevent 26 #Pressing the lock button
adb shell input touchscreen swipe 930 880 930 380 #Swipe UP
adb shell input text XXXX #Entering your passcode
adb shell input keyevent 66 #Pressing Enter

Worked for me.

If you have to click OK after entering your passcode, this command will unlock your phone:

adb shell input text XXXX && adb shell input keyevent 66

Where

• XXXX is your passcode.
• 66 is keycode of button OK.
• adb shell input text XXXX will enter your passcode.
• adb shell input keyevent 66 will simulate click the OK button

This command helps you to unlock phone using ADB

adb shell input keyevent 82 # unlock