diff --git a/app/src/main/java/com/electricdreams/numo/BalanceCheckActivity.kt b/app/src/main/java/com/electricdreams/numo/BalanceCheckActivity.kt
index 91f40597..6e15ae5c 100644
--- a/app/src/main/java/com/electricdreams/numo/BalanceCheckActivity.kt
+++ b/app/src/main/java/com/electricdreams/numo/BalanceCheckActivity.kt
@@ -108,6 +108,12 @@ class BalanceCheckActivity : AppCompatActivity() {
         Log.d(TAG, "✅ NFC foreground dispatch disabled")
     }
 
+    override fun onDestroy() {
+        // Prevent leaking the activity through pending callbacks
+        mainHandler.removeCallbacksAndMessages(null)
+        super.onDestroy()
+    }
+
     override fun onNewIntent(intent: Intent) {
         super.onNewIntent(intent)
         Log.d(TAG, "=== NFC onNewIntent triggered ===")
diff --git a/app/src/main/java/com/electricdreams/numo/ui/components/PosUiCoordinator.kt b/app/src/main/java/com/electricdreams/numo/ui/components/PosUiCoordinator.kt
index c0c1b4d7..c75098e0 100644
--- a/app/src/main/java/com/electricdreams/numo/ui/components/PosUiCoordinator.kt
+++ b/app/src/main/java/com/electricdreams/numo/ui/components/PosUiCoordinator.kt
@@ -161,6 +161,8 @@ class PosUiCoordinator(
     /** Stop services */
     fun stopServices() {
         nfcPaymentProcessor.stopHceService()
+        // Prevent leaking the activity reference via pending callbacks
+        mainHandler.removeCallbacksAndMessages(null)
     }
 
     /** Get requested amount */