diff --git a/daemon/powerdevilprofilegenerator.cpp b/daemon/powerdevilprofilegenerator.cpp
--- a/daemon/powerdevilprofilegenerator.cpp
+++ b/daemon/powerdevilprofilegenerator.cpp
@@ -58,15 +58,20 @@
     KConfigGroup acProfile(profilesConfig, "AC");
     acProfile.writeEntry("icon", "battery-charging");
 
+    const bool mobile = !qEnvironmentVariableIsEmpty("QT_QUICK_CONTROLS_MOBILE");
+    const Modes defaultPowerButtonAction = mobile ? LockScreenMode : LogoutDialogMode;
+
     // We want to dim the screen after a while, definitely
     {
         KConfigGroup dimDisplay(&acProfile, "DimDisplay");
         dimDisplay.writeEntry< int >("idleTime", 300000);
     }
     // Show the dialog when power button is pressed and suspend on suspend button pressed and lid closed (if supported)
     {
         KConfigGroup handleButtonEvents(&acProfile, "HandleButtonEvents");
-        handleButtonEvents.writeEntry< uint >("powerButtonAction", LogoutDialogMode);
+
+        handleButtonEvents.writeEntry< uint >("powerButtonAction", defaultPowerButtonAction);
+
         if (toRam) {
             handleButtonEvents.writeEntry< uint >("lidAction", ToRamMode);
         } else {
@@ -91,7 +96,7 @@
     // Show the dialog when power button is pressed and suspend on suspend button pressed and lid closed (if supported)
     {
         KConfigGroup handleButtonEvents(&batteryProfile, "HandleButtonEvents");
-        handleButtonEvents.writeEntry< uint >("powerButtonAction", LogoutDialogMode);
+        handleButtonEvents.writeEntry< uint >("powerButtonAction", defaultPowerButtonAction);
         if (toRam) {
             handleButtonEvents.writeEntry< uint >("lidAction", ToRamMode);
         } else {
@@ -127,7 +132,7 @@
     // Show the dialog when power button is pressed and suspend on suspend button pressed and lid closed (if supported)
     {
         KConfigGroup handleButtonEvents(&lowBatteryProfile, "HandleButtonEvents");
-        handleButtonEvents.writeEntry< uint >("powerButtonAction", LogoutDialogMode);
+        handleButtonEvents.writeEntry< uint >("powerButtonAction", defaultPowerButtonAction);
         if (toRam) {
             handleButtonEvents.writeEntry< uint >("lidAction", ToRamMode);
         } else {