diff --git a/Headers.h b/Headers.h
index 5616d54..3789714 100644
--- a/Headers.h
+++ b/Headers.h
@@ -10,6 +10,15 @@
 #ifndef LASTAPP_HEADERS_H_
 #define LASTAPP_HEADERS_H_
 
+@interface SBCoverSheetPresentationManager : NSObject
++ (id)sharedInstance;
+- (BOOL)hasBeenDismissedSinceKeybagLock;
+@end
+
+@interface SBDeviceApplicationSceneEntity : NSObject // SBApplicationSceneEntity -> SBWorkspaceEntity -> NSObject
+- (id)initWithApplicationForMainDisplay:(id)arg1;
+@end
+
 @interface SBDisplay : NSObject
 - (void)setActivationSetting:(unsigned)setting flag:(BOOL)flag;
 - (void)setDeactivationSetting:(unsigned)setting flag:(BOOL)flag;
@@ -113,6 +122,7 @@
 
 @interface SBUserAgent : NSObject
 + (id)sharedUserAgent;
+- (BOOL)deviceIsLocked;
 - (BOOL)deviceIsPasscodeLocked;
 @end
 
diff --git a/Tweak.xm b/Tweak.xm
index 5825293..8379537 100644
--- a/Tweak.xm
+++ b/Tweak.xm
@@ -147,7 +147,18 @@ static inline BOOL isDisplayingPowerDown() {
 }
 
 static void saveTopApplication() {
-    if ([[%c(SBAwayController) sharedAwayController] isLocked]) {
+    BOOL isLocked = NO;
+
+    if (IOS_GTE(11_0)) {
+        isLocked = ![[%c(SBCoverSheetPresentationManager) sharedInstance] hasBeenDismissedSinceKeybagLock];
+    } else if (IOS_LT(7_0)) {
+        SBAwayController *awayCont = [%c(SBAwayController) sharedAwayController];
+        isLocked = [awayCont isLocked];
+    } else {
+        isLocked = [[%c(SBUserAgent) sharedUserAgent] deviceIsLocked];
+    }
+
+    if (isLocked) {
         // Ignore lock screen.
         return;
     }
@@ -189,7 +200,10 @@ static inline BOOL canInvoke() {
     BOOL isLocked = NO;
     BOOL isEmergencyCall = NO;
 
-    if (IOS_LT(7_0)) {
+    if (IOS_GTE(11_0)) {
+        isLocked = ![[%c(SBCoverSheetPresentationManager) sharedInstance] hasBeenDismissedSinceKeybagLock];
+        isEmergencyCall = [[%c(SBTelephonyManager) sharedTelephonyManager] isEmergencyCallActive];
+    } else if (IOS_LT(7_0)) {
         SBAwayController *awayCont = [%c(SBAwayController) sharedAwayController];
         isLocked = [awayCont isLocked];
         isEmergencyCall = [awayCont isMakingEmergencyCall];
@@ -250,7 +264,13 @@ static inline SBApplication *topApplication() {
         }
 
         if (toApp) {
-            if (IOS_GTE(9_0)) {
+            if (IOS_GTE(11_0)) {
+                SBMainWorkspace *workspace = [%c(SBMainWorkspace) sharedInstance];
+                SBDeviceApplicationSceneEntity *app = [[%c(SBDeviceApplicationSceneEntity) alloc] initWithApplicationForMainDisplay:toApp];
+                SBWorkspaceTransitionRequest *request = [workspace createRequestForApplicationActivation:app options:0];
+                [workspace executeTransitionRequest:request];
+                [app release];
+            } else if (IOS_GTE(9_0)) {
                 // NOTE: The "createRequest..." method used below does *not* follow the ownership rule;
                 //       the returned object is autoreleased.
                 SBMainWorkspace *workspace = [%c(SBMainWorkspace) sharedInstance];