End Call by Pressing Power Button on Android Phone

STEP 1: Go to Settings of your phone . You can press Menu button and then select an option of Settings or System Settings . Settings can also be accessed by swiping down the top edge of the mobile screen . STEP 2: Now, go to Accessibility option  STEP 3: Here you will find an option that would read something like “ Power button ends call ” or “ End calls by Pressing the power key”  STEP 4: Tick this check box option and you’ re done! Now when you ’ re on a call, you can simply press the power button to disconnect it . You should just press the button and then release it immediately. If you’ ll hold the power button for long, it may shutdown your phone .