diff --git a/src/main/res/values-v21/strings.xml b/src/main/res/values-v21/strings.xml
new file mode 100644
index 00000000..14c389ed
--- /dev/null
+++ b/src/main/res/values-v21/strings.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="proxied_apps_summary">Set proxy for selected apps</string>
+</resources>
diff --git a/src/main/res/values-zh-v21/strings.xml b/src/main/res/values-zh-v21/strings.xml
new file mode 100644
index 00000000..e16254e2
--- /dev/null
+++ b/src/main/res/values-zh-v21/strings.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="proxied_apps_summary">为应用程序分别设置代理</string>
+</resources>
diff --git a/src/main/res/values-zh/strings.xml b/src/main/res/values-zh/strings.xml
index 46db437b..ee30b407 100755
--- a/src/main/res/values-zh/strings.xml
+++ b/src/main/res/values-zh/strings.xml
@@ -26,7 +26,7 @@
   <string name="auto_set_gfwlist_summary">绕过所有位于中国的网站</string>
   <string name="route_list">路由</string>
   <string name="proxied_apps">分应用代理</string>
-  <string name="proxied_apps_summary">为应用程序分别设置代理</string>
+  <string name="proxied_apps_summary">为应用程序分别设置代理，在 4.x 下需要启用 NAT 模式</string>
   <string name="on">开</string>
   <string name="bypass_apps">绕行模式</string>
   <string name="bypass_apps_summary">启用该选项，以使所选应用程序的流量不经过代理</string>
@@ -34,6 +34,7 @@
   <string name="auto_connect_summary">随系统启动后台服务</string>
   <string name="forward_success">后台服务已开始运行。</string>
   <string name="service_failed">无法连接远程服务器</string>
+  <string name="nat_deprecated">警告：在 Android 5.0 及更高版本中不建议使用 NAT 模式</string>
   <string name="nat_no_root">NAT 模式需要 ROOT 权限</string>
   <string name="switch_to_vpn">切换到 VPN 模式</string>
   <string name="stop">停止服务</string>
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 3f5c51d4..4c020eeb 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -54,7 +54,7 @@
   </string>
   <string name="route_list">Route</string>
   <string name="proxied_apps">Per-App Proxy</string>
-  <string name="proxied_apps_summary">Set proxy for selected apps</string>
+  <string name="proxied_apps_summary">Set proxy for selected apps, requires NAT mode under Android 4.x</string>
   <string name="on">On</string>
   <string name="bypass_apps">Bypass Mode</string>
   <string name="bypass_apps_summary">Enable this option to bypass selected apps</string>
@@ -66,6 +66,7 @@
   <!-- notification category -->
   <string name="forward_success">Shadowsocks started.</string>
   <string name="service_failed">Failed to connect the remote server</string>
+  <string name="nat_deprecated">WARNING: NAT mode has been deprecated since Android 5.0</string>
   <string name="nat_no_root">NAT mode requires ROOT permission</string>
   <string name="switch_to_vpn">Switch to VPN mode</string>
   <string name="stop">Stop the service</string>
diff --git a/src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala b/src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala
index 20e5e882..55423e0a 100644
--- a/src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala
+++ b/src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala
@@ -76,12 +76,11 @@ class ProfileManagerActivity extends AppCompatActivity with OnMenuItemClickListe
       handler.post(() => text.setText(builder))
     }
 
-    def bind(item: Profile, i: Int) {
+    def bind(item: Profile) {
       this.item = item
       updateText()
       if (item.id == ShadowsocksApplication.profileId) {
         text.setChecked(true)
-        selectedIndex = i
         selectedItem = this
       } else {
         text.setChecked(false)
@@ -102,7 +101,7 @@ class ProfileManagerActivity extends AppCompatActivity with OnMenuItemClickListe
 
     def getItemCount = profiles.length
 
-    def onBindViewHolder(vh: ProfileViewHolder, i: Int) = vh.bind(profiles(i), i)
+    def onBindViewHolder(vh: ProfileViewHolder, i: Int) = vh.bind(profiles(i))
 
     def onCreateViewHolder(vg: ViewGroup, i: Int) =
       new ProfileViewHolder(LayoutInflater.from(vg.getContext).inflate(R.layout.layout_profiles_item, vg, false))
@@ -154,7 +153,6 @@ class ProfileManagerActivity extends AppCompatActivity with OnMenuItemClickListe
     }
   }
 
-  private var selectedIndex = -1
   private var selectedItem: ProfileViewHolder = _
   private val handler = new Handler
 
@@ -181,10 +179,9 @@ class ProfileManagerActivity extends AppCompatActivity with OnMenuItemClickListe
     profilesList.setLayoutManager(layoutManager)
     profilesList.setItemAnimator(new DefaultItemAnimator)
     profilesList.setAdapter(profilesAdapter)
-    if (selectedIndex < 0) selectedIndex = profilesAdapter.profiles.zipWithIndex.collectFirst {
+    layoutManager.scrollToPosition(profilesAdapter.profiles.zipWithIndex.collectFirst {
       case (profile, i) if profile.id == ShadowsocksApplication.profileId => i
-    }.getOrElse(-1)
-    layoutManager.scrollToPosition(selectedIndex)
+    }.getOrElse(-1))
     removedSnackbar = Snackbar.make(profilesList, R.string.removed, Snackbar.LENGTH_LONG)
       .setAction(R.string.undo, ((v: View) => profilesAdapter.undoRemoves): OnClickListener)
     removedSnackbar.getView.addOnAttachStateChangeListener(new OnAttachStateChangeListener {
diff --git a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
index 6eb2ff04..84a8602f 100644
--- a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
+++ b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
@@ -168,6 +168,11 @@ class Shadowsocks
     // Update the UI
     if (fab != null) fab.setEnabled(true)
     updateState()
+    if (Build.VERSION.SDK_INT >= 21 && !ShadowsocksApplication.isVpnEnabled) {
+      val snackbar = Snackbar.make(findViewById(android.R.id.content), R.string.nat_deprecated, Snackbar.LENGTH_LONG)
+      snackbar.setAction(R.string.switch_to_vpn, (_ => preferences.natSwitch.setChecked(false)): View.OnClickListener)
+      snackbar.show
+    }
 
     if (!ShadowsocksApplication.settings.getBoolean(ShadowsocksApplication.getVersionName, false)) {
       ShadowsocksApplication.settings.edit.putBoolean(ShadowsocksApplication.getVersionName, true).apply()
diff --git a/src/main/scala/com/github/shadowsocks/TaskerActivity.scala b/src/main/scala/com/github/shadowsocks/TaskerActivity.scala
index 8f0c40f5..e40426d8 100644
--- a/src/main/scala/com/github/shadowsocks/TaskerActivity.scala
+++ b/src/main/scala/com/github/shadowsocks/TaskerActivity.scala
@@ -82,7 +82,7 @@ class TaskerActivity extends AppCompatActivity {
   }
 
   private class ProfilesAdapter extends RecyclerView.Adapter[ProfileViewHolder] {
-    private val profiles = ShadowsocksApplication.profileManager.getAllProfiles.getOrElse(List.empty[Profile])
+    val profiles = ShadowsocksApplication.profileManager.getAllProfiles.getOrElse(List.empty[Profile])
     def getItemCount = 1 + profiles.length
     def onBindViewHolder(vh: ProfileViewHolder, i: Int) = i match {
       case 0 => vh.bindDefault
@@ -110,9 +110,13 @@ class TaskerActivity extends AppCompatActivity {
     switch = findViewById(R.id.serviceSwitch).asInstanceOf[Switch]
     switch.setChecked(taskerOption.switchOn)
     val profilesList = findViewById(R.id.profilesList).asInstanceOf[RecyclerView]
-    profilesList.setLayoutManager(new LinearLayoutManager(this))
+    val lm = new LinearLayoutManager(this)
+    profilesList.setLayoutManager(lm)
     profilesList.setItemAnimator(new DefaultItemAnimator)
     profilesList.setAdapter(profilesAdapter)
+    if (taskerOption.profileId >= 0) lm.scrollToPosition(profilesAdapter.profiles.zipWithIndex.collectFirst {
+      case (profile, i) if profile.id == taskerOption.profileId => i + 1
+    }.getOrElse(0))
   }
 }