在根路徑路徑下：frameworks\base\core\java\android\provider\Settings.java
public static final int INCALL_POWER_BUTTON_BEHAVIOR_DEFAULT= INCALL_POWER_BUTTON_BEHAVIOR_SCREEN_OFF;的變量參數改爲：
public static final int INCALL_POWER_BUTTON_BEHAVIOR_DEFAULT = INCALL_POWER_BUTTON_BEHAVIOR_HANGUP
其中：
public static final int INCALL_POWER_BUTTON_BEHAVIOR_SCREEN_OFF = 0x1; 爲按下電源鍵關閉屏幕（系統默認）
public static final int INCALL_POWER_BUTTON_BEHAVIOR_HANGUP = 0x2; 爲按下電源鍵通過過程中直接掛斷電話