diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardSimPinView.java b/packages/SystemUI/src/com/android/keyguard/KeyguardSimPinView.java
index fe03fba5bfda9..16a0e5af1e0af 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardSimPinView.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardSimPinView.java
@@ -64,7 +64,11 @@ public class KeyguardSimPinView extends KeyguardPinBasedInputView {
                 // again when the PUK locked SIM is re-entered.
                 case ABSENT: {
                     KeyguardUpdateMonitor.getInstance(getContext()).reportSimUnlocked(mSubId);
-                    mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
+                    // onSimStateChanged callback can fire when the SIM PIN lock is not currently
+                    // active and mCallback is null.
+                    if (mCallback != null) {
+                        mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
+                    }
                     break;
                 }
                 default:
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardSimPukView.java b/packages/SystemUI/src/com/android/keyguard/KeyguardSimPukView.java
index 826a03d1b6587..fddb12d0f7653 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardSimPukView.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardSimPukView.java
@@ -70,7 +70,11 @@ public class KeyguardSimPukView extends KeyguardPinBasedInputView {
                 // move into the READY state and the PUK lock keyguard should be removed.
                 case READY: {
                     KeyguardUpdateMonitor.getInstance(getContext()).reportSimUnlocked(mSubId);
-                    mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
+                    // mCallback can be null if onSimStateChanged callback is called when keyguard
+                    // isn't active.
+                    if (mCallback != null) {
+                        mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
+                    }
                     break;
                 }
                 default: