diff --git a/mobile/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala b/mobile/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
index cf972038..137e18d1 100644
--- a/mobile/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
+++ b/mobile/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
@@ -33,6 +33,9 @@ class GlobalConfigFragment extends PreferenceFragmentCompatDividers {
   override def onCreatePreferencesFix(bundle: Bundle, key: String) {
     getPreferenceManager.setPreferenceDataStore(app.dataStore)
     app.dataStore.putString(Key.serviceMode, app.dataStore.serviceMode) // temporary workaround for support lib bug
+    app.dataStore.putString(Key.portProxy, app.dataStore.portProxy.toString)
+    app.dataStore.putString(Key.portLocalDns, app.dataStore.portLocalDns.toString)
+    app.dataStore.putString(Key.portTransproxy, app.dataStore.portTransproxy.toString)
     addPreferencesFromResource(R.xml.pref_global)
     val switch = findPreference(Key.isAutoConnect).asInstanceOf[SwitchPreference]
     switch.setOnPreferenceChangeListener((_, value) => {
diff --git a/mobile/src/main/scala/com/github/shadowsocks/ShadowsocksApplication.scala b/mobile/src/main/scala/com/github/shadowsocks/ShadowsocksApplication.scala
index c134d138..c27af806 100644
--- a/mobile/src/main/scala/com/github/shadowsocks/ShadowsocksApplication.scala
+++ b/mobile/src/main/scala/com/github/shadowsocks/ShadowsocksApplication.scala
@@ -163,7 +163,6 @@ class ShadowsocksApplication extends Application {
     TcpFastOpen.enabled(dataStore.getBoolean(Key.tfo, TcpFastOpen.sendEnabled))
 
     if (dataStore.getLong(Key.assetUpdateTime, -1) != info.lastUpdateTime) copyAssets()
-    (dataStore.portProxy, dataStore.portLocalDns, dataStore.portTransproxy) // initialize ports for UI
 
     if (Build.VERSION.SDK_INT >= 26) {
       val nm = getSystemService(classOf[NotificationManager])