diff --git a/src/main/java/fr/unix_experience/owncloud_sms/activities/remote_account/RestoreMessagesActivity.java b/src/main/java/fr/unix_experience/owncloud_sms/activities/remote_account/RestoreMessagesActivity.java
index 6bbd9fc..9d155c9 100644
--- a/src/main/java/fr/unix_experience/owncloud_sms/activities/remote_account/RestoreMessagesActivity.java
+++ b/src/main/java/fr/unix_experience/owncloud_sms/activities/remote_account/RestoreMessagesActivity.java
@@ -35,12 +35,14 @@ import android.widget.TextView;
 
 import fr.unix_experience.owncloud_sms.R;
 import fr.unix_experience.owncloud_sms.engine.ASyncSMSRecovery;
+import fr.unix_experience.owncloud_sms.engine.ConnectivityMonitor;
 
 public class RestoreMessagesActivity extends AppCompatActivity {
 
 	Account _account = null;
 	String _defaultSmsApp;
 	private static final int REQUEST_DEFAULT_SMSAPP = 1;
+	boolean restoreInProgress = false;
 
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
@@ -65,13 +67,58 @@ public class RestoreMessagesActivity extends AppCompatActivity {
 			throw new IllegalStateException(getString(R.string.err_didnt_find_account_restore));
 		}
 
+		initInterface();
+		Button fix_button = (Button) findViewById(R.id.button_fix_permissions);
+		final Button launch_restore = (Button) findViewById(R.id.button_launch_restore);
+		final ProgressBar pb = (ProgressBar) findViewById(R.id.progressbar_restore);
+
+		final RestoreMessagesActivity me = this;
+		fix_button.setOnClickListener(new View.OnClickListener() {
+			public void onClick(View v) {
+				if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
+					notifyIncompatibleVersion();
+					return;
+				}
+
+				if (!new ConnectivityMonitor(me).isValid()) {
+					notifyNoConnectivity();
+					return;
+				}
+
+				Log.i(RestoreMessagesActivity.TAG, "Ask to change the default SMS app");
+
+				Intent intent = new Intent(Telephony.Sms.Intents.ACTION_CHANGE_DEFAULT);
+				intent.putExtra(Telephony.Sms.Intents.EXTRA_PACKAGE_NAME, getBaseContext().getPackageName());
+				startActivityForResult(intent, REQUEST_DEFAULT_SMSAPP);
+			}
+		});
+
+		launch_restore.setOnClickListener(new View.OnClickListener() {
+			public void onClick(View v) {
+				if (!new ConnectivityMonitor(me).isValid()) {
+					notifyNoConnectivity();
+					return;
+				}
+
+				launch_restore.setVisibility(View.INVISIBLE);
+				pb.setVisibility(View.VISIBLE);
+
+				// Verify connectivity
+				Log.i(RestoreMessagesActivity.TAG, "Launching restore asynchronously");
+				restoreInProgress = true;
+				new ASyncSMSRecovery.SMSRecoveryTask(me, _account).execute();
+			}
+		});
+	}
+
+	private void initInterface() {
 		TextView tv_error = (TextView) findViewById(R.id.tv_error_default_smsapp);
 		tv_error.setText(R.string.error_make_default_sms_app);
 		findViewById(R.id.tv_restore_finished).setVisibility(View.INVISIBLE);
 		findViewById(R.id.tv_progress_value).setVisibility(View.INVISIBLE);
 		Button fix_button = (Button) findViewById(R.id.button_fix_permissions);
-		final Button launch_restore = (Button) findViewById(R.id.button_launch_restore);
-		final ProgressBar pb = (ProgressBar) findViewById(R.id.progressbar_restore);
+		Button launch_restore = (Button) findViewById(R.id.button_launch_restore);
+		ProgressBar pb = (ProgressBar) findViewById(R.id.progressbar_restore);
 		pb.setVisibility(View.INVISIBLE);
 
 		if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
@@ -91,46 +138,28 @@ public class RestoreMessagesActivity extends AppCompatActivity {
 			fix_button.setVisibility(View.INVISIBLE);
 			launch_restore.setVisibility(View.VISIBLE);
 		}
-
-		fix_button.setOnClickListener(new View.OnClickListener() {
-			public void onClick(View v) {
-				if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
-					notifyIncompatibleVersion();
-					return;
-				}
-
-				Log.i(RestoreMessagesActivity.TAG, "Ask to change the default SMS app");
-
-				Intent intent = new Intent(Telephony.Sms.Intents.ACTION_CHANGE_DEFAULT);
-				intent.putExtra(Telephony.Sms.Intents.EXTRA_PACKAGE_NAME, getBaseContext().getPackageName());
-				startActivityForResult(intent, REQUEST_DEFAULT_SMSAPP);
-			}
-		});
-
-		final RestoreMessagesActivity me = this;
-		launch_restore.setOnClickListener(new View.OnClickListener() {
-			public void onClick(View v) {
-				launch_restore.setVisibility(View.INVISIBLE);
-				pb.setVisibility(View.VISIBLE);
-
-				// Verify connectivity
-				Log.i(RestoreMessagesActivity.TAG, "Launching restore asynchronously");
-				new ASyncSMSRecovery.SMSRecoveryTask(me, _account).execute();
-			}
-		});
 	}
 
-	private void notifyIncompatibleVersion() {
+	private void errorNotification(int err) {
 		TextView tv = (TextView) findViewById(R.id.tv_error_default_smsapp);
 		Button fix_button = (Button) findViewById(R.id.button_fix_permissions);
 		Button launch_restore = (Button) findViewById(R.id.button_launch_restore);
 		ProgressBar pb = (ProgressBar) findViewById(R.id.progressbar_restore);
-		tv.setText(R.string.err_kitkat_required);
+		tv.setText(err);
+		tv.setVisibility(View.VISIBLE);
 		fix_button.setVisibility(View.INVISIBLE);
 		launch_restore.setVisibility(View.INVISIBLE);
 		pb.setVisibility(View.INVISIBLE);
 	}
 
+	private void notifyIncompatibleVersion() {
+		errorNotification(R.string.err_kitkat_required);
+	}
+
+	private void notifyNoConnectivity() {
+		errorNotification(R.string.err_no_connection);
+	}
+
 	@Override
 	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 		switch (requestCode) {
@@ -149,15 +178,33 @@ public class RestoreMessagesActivity extends AppCompatActivity {
 		}
 	}
 
+	@Override
+	protected void onResume() {
+		super.onResume();
+		if (!new ConnectivityMonitor(this).isValid()) {
+			notifyNoConnectivity();
+			return;
+		}
+
+		if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
+			notifyIncompatibleVersion();
+			return;
+		}
+
+		if (!restoreInProgress) {
+			initInterface();
+		}
+	}
+
 	public void onRestoreDone() {
-		// @TODO
-		Log.i(RestoreMessagesActivity.TAG, "Sync is done, updating interface");
 		findViewById(R.id.progressbar_restore).setVisibility(View.INVISIBLE);
 		findViewById(R.id.tv_restore_finished).setVisibility(View.VISIBLE);
 
 		Intent finalIntent = new Intent(Telephony.Sms.Intents.ACTION_CHANGE_DEFAULT);
 		finalIntent.putExtra(Telephony.Sms.Intents.EXTRA_PACKAGE_NAME, _defaultSmsApp);
 		startActivity(finalIntent);
+
+		restoreInProgress = false;
 	}
 
 	public void onProgressUpdate(Integer value) {
diff --git a/src/main/java/fr/unix_experience/owncloud_sms/engine/ASyncSMSRecovery.java b/src/main/java/fr/unix_experience/owncloud_sms/engine/ASyncSMSRecovery.java
index 4a7ffb6..18393d0 100644
--- a/src/main/java/fr/unix_experience/owncloud_sms/engine/ASyncSMSRecovery.java
+++ b/src/main/java/fr/unix_experience/owncloud_sms/engine/ASyncSMSRecovery.java
@@ -49,10 +49,13 @@ public interface ASyncSMSRecovery {
 			if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
 				return null;
 			}
+
+			if (!new ConnectivityMonitor(_context).isValid()) {
+				Log.e(ASyncSMSRecovery.TAG, "Restore connectivity problems, aborting");
+				return null;
+			}
+
 			Log.i(ASyncSMSRecovery.TAG, "Starting background recovery");
-
-			// Verify connectivity
-
 			Long start = (long) 0;
 
 			OCSMSOwnCloudClient client = new OCSMSOwnCloudClient(_context, _account);
@@ -119,6 +122,11 @@ public interface ASyncSMSRecovery {
 					}
 
 					start = obj.getLong("last_id");
+
+					if (!new ConnectivityMonitor(_context).isValid()) {
+						Log.e(ASyncSMSRecovery.TAG, "Restore connectivity problems, aborting");
+						return null;
+					}
 					obj = client.retrieveSomeMessages(start, 500);
 				}
 			} catch (JSONException e) {
diff --git a/src/main/res/values-en/strings.xml b/src/main/res/values-en/strings.xml
index 3cc3af9..e2826e0 100644
--- a/src/main/res/values-en/strings.xml
+++ b/src/main/res/values-en/strings.xml
@@ -178,5 +178,6 @@
     <string name="err_kitkat_required">Android 4.4 or greater is required to use this feature.</string>
     <string name="error_make_default_sms_app">Please make this application default SMS application to permit restore your messages. This limitation has been introduced by Android 4.4.</string>
     <string name="x_messages_restored">messages restored...</string>
+    <string name="err_no_connection">No connection available, please ensure you have a valid data connection.</string>
 
 </resources>
diff --git a/src/main/res/values-fr/strings.xml b/src/main/res/values-fr/strings.xml
index 14d4aa7..5e482fb 100644
--- a/src/main/res/values-fr/strings.xml
+++ b/src/main/res/values-fr/strings.xml
@@ -166,4 +166,5 @@
     <string name="err_sync_get_smslist">Erreur #1: Données invalides reçues lors de l\'obtention des messages précédents.</string>
     <string name="error_make_default_sms_app">Merci de bien vouloir mettre cette application en application SMS par défaut le temps de restaurer les messages. Cette limitation a été ajoutée depuis Android 4.4.</string>
     <string name="x_messages_restored">messages restaurés...</string>
+    <string name="err_no_connection">Aucune connexion disponible, assurez voir d\'avoir une connection de données valide.</string>
 </resources>
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 88608cf..7cbad11 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -253,4 +253,5 @@
     <string name="err_kitkat_required">Android 4.4 or greater is required to use this feature.</string>
     <string name="restore_finished">SMS restauration is now finished.</string>
     <string name="x_messages_restored">messages restored...</string>
+    <string name="err_no_connection">No connection available, please ensure you have a valid data connection.</string>
 </resources>