diff --git a/app/src/main/java/com/xypower/mpapp/BridgeProvider.java b/app/src/main/java/com/xypower/mpapp/BridgeProvider.java
index 455c4177..1fa924d0 100644
--- a/app/src/main/java/com/xypower/mpapp/BridgeProvider.java
+++ b/app/src/main/java/com/xypower/mpapp/BridgeProvider.java
@@ -155,6 +155,7 @@ public class BridgeProvider extends ContentProvider {
         String resultFile = values.containsKey("resultFile") ? values.getAsString("resultFile") : null;
         int index = values.containsKey("index") ? values.getAsInteger("index").intValue() : 0;
 
+        Log.i(TAG, "Start import private key");
         boolean res = false;
         if (!TextUtils.isEmpty(cert)) {
             // Import
@@ -170,6 +171,8 @@ public class BridgeProvider extends ContentProvider {
             }
         }
 
+        Log.i(TAG, "Finish import private key");
+
         if (!TextUtils.isEmpty(resultFile)) {
             FilesUtils.ensureParentDirectoryExisted(resultFile);
             FilesUtils.writeTextFile(resultFile, res ? "1" : "0");