diff --git a/cyberwow/lib/config.dart b/cyberwow/lib/config.dart
index 32adf5c..51050dd 100644
--- a/cyberwow/lib/config.dart
+++ b/cyberwow/lib/config.dart
@@ -27,3 +27,5 @@ const config = cryptoConfig.config;
 const arch = 'arm64';
 // const arch = 'x86_64';
 const minimumHeight = 118361;
+
+const isPC = arch == 'x86_64';
diff --git a/cyberwow/lib/controller/daemon.dart b/cyberwow/lib/controller/daemon.dart
new file mode 100644
index 0000000..2b46db4
--- /dev/null
+++ b/cyberwow/lib/controller/daemon.dart
@@ -0,0 +1,45 @@
+/*
+
+Copyright 2019 fuwa
+
+This file is part of CyberWOW.
+
+CyberWOW is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+CyberWOW is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with CyberWOW.  If not, see <https://www.gnu.org/licenses/>.
+
+*/
+
+import 'dart:async';
+import 'dart:convert';
+
+import 'rpc.dart' as rpc;
+
+Future<bool> isConnected() async {
+  final _outPeers = await rpc.outgoingConnectionsCount();
+  final _inPeers = await rpc.incomingConnectionsCount();
+
+  // print('_outPeers: ${_outPeers}');
+  return _outPeers + _inPeers > 0;
+}
+
+Future<bool> isSynced() async {
+  final _targetHeight = await rpc.targetHeight();
+  final _height = await rpc.height();
+  return _targetHeight >= 0 && _targetHeight <= _height;
+}
+
+Future<bool> isNotSynced() async {
+  final _targetHeight = await rpc.targetHeight();
+  final _height = await rpc.height();
+  return _targetHeight > _height;
+}
diff --git a/cyberwow/lib/controller/helper.dart b/cyberwow/lib/controller/helper.dart
index 94fa3a6..e817faa 100644
--- a/cyberwow/lib/controller/helper.dart
+++ b/cyberwow/lib/controller/helper.dart
@@ -34,4 +34,3 @@ Future<bool> binaryExists(String name) async {
   final binPath = await getBinaryPath(name);
   return new File(binPath).exists();
 }
-
diff --git a/cyberwow/lib/controller/refresh.dart b/cyberwow/lib/controller/refresh.dart
index 53d168f..643ed42 100644
--- a/cyberwow/lib/controller/refresh.dart
+++ b/cyberwow/lib/controller/refresh.dart
@@ -38,3 +38,16 @@ Stream<int> targetHeight(GetNotificationFunc getNotification) async* {
     await Future.delayed(const Duration(seconds: 2), () => "1");
   }
 }
+
+Stream<Null> pull(GetNotificationFunc getNotification) async* {
+  while (true) {
+    final _appState = getNotification();
+    // print('refresh targetHeight: app state: ${_appState}');
+
+    if (_appState == AppLifecycleState.resumed) {
+      yield null;
+    }
+
+    await Future.delayed(const Duration(seconds: 2), () => "1");
+  }
+}
diff --git a/cyberwow/lib/controller/rpc.dart b/cyberwow/lib/controller/rpc.dart
index cda4f6f..9741945 100644
--- a/cyberwow/lib/controller/rpc.dart
+++ b/cyberwow/lib/controller/rpc.dart
@@ -112,7 +112,7 @@ Future<bool> offline() async {
   }
 }
 
-Future<int> outgoing_connections_count() async {
+Future<int> outgoingConnectionsCount() async {
   var response = await getInfo();
 
   if (response == null) return -1;
@@ -125,3 +125,17 @@ Future<int> outgoing_connections_count() async {
     return responseBody["outgoing_connections_count"];
   }
 }
+
+Future<int> incomingConnectionsCount() async {
+  var response = await getInfo();
+
+  if (response == null) return -1;
+
+  // print('Response status: ${response.statusCode}');
+  if (response.statusCode != 200) {
+    return -1;
+  } else {
+    final responseBody = json.decode(response.body)['result'];
+    return responseBody["incoming_connections_count"];
+  }
+}
diff --git a/cyberwow/lib/state.dart b/cyberwow/lib/state.dart
index a86cbc3..07dc851 100644
--- a/cyberwow/lib/state.dart
+++ b/cyberwow/lib/state.dart
@@ -30,6 +30,7 @@ import 'package:path_provider/path_provider.dart';
 
 import 'controller/helper.dart';
 import 'controller/rpc.dart' as rpc;
+import 'controller/daemon.dart' as daemon;
 import 'controller/refresh.dart' as refresh;
 import 'config.dart';
 
@@ -159,25 +160,25 @@ class SyncingState extends HookedState {
     }
 
     Future<void> checkSync() async {
-      await for (var _targetHeight in refresh.targetHeight(getNotification)) {
-        print('syncing: target height ${_targetHeight}');
+      await for (var _null in refresh.pull(getNotification)) {
+        // print('syncing: target height ${_targetHeight}');
 
-        final _height = await rpc.height();
-        // print('syncing: height ${_height}');
-
-        // final _offline = await rpc.offline();
-        // print('syncing: offline ${_offline}');
-
-        final _out_peers = await rpc.outgoing_connections_count();
-        // print('syncing: out_peers ${_out_peers}');
 
         // here doc is wrong, targetHeight could match height when synced
         // potential bug, targetHeight could be smaller then height
-        if ((_targetHeight >= 0 && _targetHeight <= _height) && _out_peers > 0) {
+        final _isConnected = await daemon.isConnected();
+        final _isSynced = await daemon.isSynced();
+
+        if (_isConnected && _isSynced) {
           synced = true;
           break;
         }
         // print('syncing: checkSync loop');
+
+        if (isPC) {
+          synced = true;
+          break;
+        }
       }
     }
 
@@ -198,6 +199,7 @@ class SyncedState extends HookedState {
   int height;
   Stream<String> processOutput;
   bool synced = true;
+  bool connected = true;
 
   SyncedState(f, s, this.stdout, this.processOutput) : super (f, s);
 
@@ -208,6 +210,13 @@ class SyncedState extends HookedState {
     }
   }
 
+  void updateConnected(bool c) {
+    if (connected != c) {
+      connected = c;
+      setState(this);
+    }
+  }
+
   Future<ReSyncingState> next() async {
     print("Synced next");
 
@@ -222,22 +231,20 @@ class SyncedState extends HookedState {
 
     logStdout();
 
-    await for (var _targetHeight in refresh.targetHeight(getNotification)) {
-      // print('re-sync: target height ${_targetHeight}');
-
-      final _height = await rpc.height();
-      // print('re-sync: height ${_height}');
-
-      if (_targetHeight > _height) {
-        synced = false;
-        break;
+    Future<void> checkSync() async  {
+      await for (var _null in refresh.pull(getNotification)) {
+        if (await daemon.isNotSynced() && (!isPC)) {
+          synced = false;
+          break;
+        }
+        // print('synced loop');
+        updateHeight(await rpc.height());
+        updateConnected(await daemon.isConnected());
       }
-      // print('synced loop');
-      updateHeight(await rpc.height());
-      // print('synced: targetheight: ${_targetHeight}');
-      // print('synced: height: ${height}');
     }
 
+    await checkSync();
+
     print('synced: loop exit');
 
     ReSyncingState _next = ReSyncingState(setState, getNotification, stdout, processOutput);
@@ -272,13 +279,9 @@ class ReSyncingState extends HookedState {
     }
 
     Future<void> checkSync() async {
-      await for (var _targetHeight in refresh.targetHeight(getNotification)) {
-        // print('re-sync: target height ${_targetHeight}');
+      await for (var _null in refresh.pull(getNotification)) {
 
-        final _height = await rpc.height();
-        // print('re-sync: height ${_height}');
-
-        if (_targetHeight >= 0 && _targetHeight <= _height) {
+        if (await daemon.isSynced()) {
           synced = true;
           break;
         }
diff --git a/cyberwow/lib/widget/synced.dart b/cyberwow/lib/widget/synced.dart
index 8c1fabf..99ad6b9 100644
--- a/cyberwow/lib/widget/synced.dart
+++ b/cyberwow/lib/widget/synced.dart
@@ -39,12 +39,18 @@ Widget buildSynced(BuildContext context, SyncedState state) {
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>
           [
-            Spacer(),
+            Spacer
+            (
+              flex: 3,
+            ),
             Image.asset
             ('assets/wownero_symbol.png',
               height: 200,
             ),
-            Spacer(),
+            Spacer
+            (
+              flex: 2,
+            ),
             new Expanded
             (
               flex: 1,
@@ -63,6 +69,22 @@ Widget buildSynced(BuildContext context, SyncedState state) {
                 )
               )
             ),
+            Spacer
+            (
+              flex: 1,
+            ),
+            SizedBox
+            (
+              height: 30.0,
+              width: 30.0,
+              child: (state.connected) ?
+              Container() :
+              CircularProgressIndicator(),
+            ),
+            Spacer
+            (
+              flex: 1,
+            ),
           ],
         ),
       ),