diff --git a/build.sbt b/build.sbt
index a237e2d3..32e3ca64 100644
--- a/build.sbt
+++ b/build.sbt
@@ -20,7 +20,7 @@ lazy val commonSettings = Seq(
   resConfigs := Seq("ja", "ko", "ru", "zh-rCN", "zh-rTW")
 )
 
-val supportLibsVersion = "25.2.0"
+val supportLibsVersion = "25.3.1"
 lazy val root = Project(id = "shadowsocks-android", base = file("."))
   .settings(commonSettings)
   .aggregate(plugin, mobile)
diff --git a/mobile/build.sbt b/mobile/build.sbt
index 98043473..fc17f4ab 100644
--- a/mobile/build.sbt
+++ b/mobile/build.sbt
@@ -4,8 +4,8 @@ enablePlugins(AndroidGms)
 android.useSupportVectors
 
 name := "shadowsocks"
-version := "4.1.5"
-versionCode := Some(185)
+version := "4.1.6"
+versionCode := Some(186)
 
 proguardOptions ++=
   "-dontwarn com.evernote.android.job.gcm.**" ::
diff --git a/mobile/src/main/res/xml/default_configs.xml b/mobile/src/main/res/xml/default_configs.xml
new file mode 100644
index 00000000..2f71ea5e
--- /dev/null
+++ b/mobile/src/main/res/xml/default_configs.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<defaultsMap>
+    <entry>
+        <key>proxy_url</key>
+        <value>https://www.socks123.pw/get.php</value>
+    </entry>
+</defaultsMap>
diff --git a/mobile/src/main/scala/com/github/shadowsocks/BaseService.scala b/mobile/src/main/scala/com/github/shadowsocks/BaseService.scala
index 3462aa46..4b7df91e 100644
--- a/mobile/src/main/scala/com/github/shadowsocks/BaseService.scala
+++ b/mobile/src/main/scala/com/github/shadowsocks/BaseService.scala
@@ -126,6 +126,7 @@ trait BaseService extends Service {
 
   def connect() {
     profile.name = profile.getName  // save original name before it's (possibly) overwritten by IP addresses
+
     if (profile.host == "198.199.101.152") {
       val client = new OkHttpClient.Builder()
         .dns(hostname => Utils.resolve(hostname, enableIPv6 = false) match {
@@ -353,7 +354,7 @@ trait BaseService extends Service {
         .put("PrimaryDNS", new JSONArray().put(makeDns("Primary", "119.29.29.29")))
         .put("AlternativeDNS", remoteDns)
       case _ => config
-        .put("PrimaryDNS", new JSONArray(remoteDns))
+        .put("PrimaryDNS", remoteDns)
         // no need to setup AlternativeDNS in Acl.ALL/BYPASS_LAN mode
         .put("OnlyPrimaryDNS", true)
     }
diff --git a/mobile/src/main/scala/com/github/shadowsocks/MainActivity.scala b/mobile/src/main/scala/com/github/shadowsocks/MainActivity.scala
index 7f4745fe..ab815924 100644
--- a/mobile/src/main/scala/com/github/shadowsocks/MainActivity.scala
+++ b/mobile/src/main/scala/com/github/shadowsocks/MainActivity.scala
@@ -384,12 +384,14 @@ class MainActivity extends Activity with ServiceBoundContext with Drawer.OnDrawe
         displayFragment(new AboutFragment)
       case DRAWER_FAQ => launchUrl(getString(R.string.faq_url))
       case DRAWER_CUSTOM_RULES => displayFragment(new CustomRulesFragment)
+      case _ => // ignore
     }
     true  // unexpected cases will throw exception
   }
 
   protected override def onResume() {
     super.onResume()
+    app.remoteConfig.fetch()
     state match {
       case State.STOPPING | State.CONNECTING =>
       case _ => hideCircle()
diff --git a/mobile/src/main/scala/com/github/shadowsocks/ShadowsocksApplication.scala b/mobile/src/main/scala/com/github/shadowsocks/ShadowsocksApplication.scala
index 631cadce..47dfa13c 100644
--- a/mobile/src/main/scala/com/github/shadowsocks/ShadowsocksApplication.scala
+++ b/mobile/src/main/scala/com/github/shadowsocks/ShadowsocksApplication.scala
@@ -148,6 +148,7 @@ class ShadowsocksApplication extends Application {
     checkChineseLocale(getResources.getConfiguration)
 
     FirebaseApp.initializeApp(this)
+	remoteConfig.setDefaults(R.xml.default_configs);
     remoteConfig.fetch().addOnCompleteListener(task => if (task.isSuccessful) remoteConfig.activateFetched())
 
     JobManager.create(this).addJobCreator(DonaldTrump)