diff --git a/app/src/main/java/io/nekohasekai/sagernet/Constants.kt b/app/src/main/java/io/nekohasekai/sagernet/Constants.kt
index d44293e..74df77d 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/Constants.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/Constants.kt
@@ -50,7 +50,7 @@ object Key {
 
     const val TCP_KEEP_ALIVE_INTERVAL = "tcpKeepAliveInterval"
     const val RULES_PROVIDER = "rulesProvider"
-    const val ENABLE_LOG = "enableLog"
+    const val LOG_LEVEL = "logLevel"
     const val LOG_BUF_SIZE = "logBufSize"
     const val MTU = "mtu"
     const val ALWAYS_SHOW_ADDRESS = "alwaysShowAddress"
diff --git a/app/src/main/java/io/nekohasekai/sagernet/SagerNet.kt b/app/src/main/java/io/nekohasekai/sagernet/SagerNet.kt
index 62a1d12..b8cc86b 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/SagerNet.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/SagerNet.kt
@@ -77,7 +77,7 @@ class SagerNet : Application(),
             filesDir.absolutePath + "/",
             externalAssets.absolutePath + "/",
             DataStore.logBufSize,
-            DataStore.enableLog,
+            DataStore.logLevel > 0,
             this
         )
 
diff --git a/app/src/main/java/io/nekohasekai/sagernet/bg/proto/BoxInstance.kt b/app/src/main/java/io/nekohasekai/sagernet/bg/proto/BoxInstance.kt
index 0826578..d59b1d2 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/bg/proto/BoxInstance.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/bg/proto/BoxInstance.kt
@@ -185,7 +185,7 @@ abstract class BoxInstance(
                             "--config",
                             configFile.absolutePath,
                             "--log-level",
-                            if (DataStore.enableLog) "trace" else "warn",
+                            if (DataStore.logLevel > 0) "trace" else "warn",
                             "client"
                         )
 
diff --git a/app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt b/app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt
index 45fa8e6..6f67739 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt
@@ -106,7 +106,7 @@ object DataStore : OnPreferenceDataStoreChangeListener {
     var dnsNetwork by configurationStore.stringSet(Key.DNS_NETWORK)
 
     var rulesProvider by configurationStore.stringToInt(Key.RULES_PROVIDER)
-    var enableLog by configurationStore.boolean(Key.ENABLE_LOG)
+    var logLevel by configurationStore.stringToInt(Key.LOG_LEVEL)
     var logBufSize by configurationStore.int(Key.LOG_BUF_SIZE) { 0 }
     var acquireWakeLock by configurationStore.boolean(Key.ACQUIRE_WAKE_LOCK)
 
diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/ConfigBuilder.kt b/app/src/main/java/io/nekohasekai/sagernet/fmt/ConfigBuilder.kt
index f43b43f..c0191ba 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/ConfigBuilder.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/ConfigBuilder.kt
@@ -146,6 +146,17 @@ fun buildConfig(
             }
         }
 
+        log = LogOptions().apply {
+            level = when (DataStore.logLevel) {
+                0 -> "panic"
+                1 -> "warn"
+                2 -> "info"
+                3 -> "debug"
+                4 -> "trace"
+                else -> "info"
+            }
+        }
+
         dns = DNSOptions().apply {
             // TODO nb4a hosts?
 //            hosts = DataStore.hosts.split("\n")
diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/naive/NaiveFmt.kt b/app/src/main/java/io/nekohasekai/sagernet/fmt/naive/NaiveFmt.kt
index 5eb7a62..cab350e 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/naive/NaiveFmt.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/naive/NaiveFmt.kt
@@ -80,7 +80,7 @@ fun NaiveBean.buildNaiveConfig(port: Int): String {
         if (extraHeaders.isNotBlank()) {
             put("extra-headers", extraHeaders.split("\n").joinToString("\r\n"))
         }
-        if (DataStore.enableLog) {
+        if (DataStore.logLevel > 0) {
             put("log", "")
         }
         if (insecureConcurrency > 0) {
diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/trojan_go/TrojanGoFmt.kt b/app/src/main/java/io/nekohasekai/sagernet/fmt/trojan_go/TrojanGoFmt.kt
index 195ba84..cb02357 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/trojan_go/TrojanGoFmt.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/trojan_go/TrojanGoFmt.kt
@@ -91,7 +91,7 @@ fun TrojanGoBean.buildTrojanGoConfig(port: Int): String {
         put("password", JSONArray().apply {
             put(password)
         })
-        put("log_level", if (DataStore.enableLog) 0 else 2)
+        put("log_level", if (DataStore.logLevel > 0) 0 else 2)
         if (Protocols.shouldEnableMux("trojan-go")) put("mux", JSONObject().apply {
             put("enabled", true)
             put("concurrency", DataStore.muxConcurrency)
diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/tuic/TuicFmt.kt b/app/src/main/java/io/nekohasekai/sagernet/fmt/tuic/TuicFmt.kt
index a74e1b2..ce31363 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/tuic/TuicFmt.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/tuic/TuicFmt.kt
@@ -59,6 +59,6 @@ fun TuicBean.buildTuicConfig(port: Int, cacheFile: (() -> File)?): String {
             put("ip", LOCALHOST)
             put("port", port)
         })
-        put("log_level", if (DataStore.enableLog) "debug" else "info")
+        put("log_level", if (DataStore.logLevel > 0) "debug" else "info")
     }.toStringPretty()
 }
diff --git a/app/src/main/java/io/nekohasekai/sagernet/ktx/Utils.kt b/app/src/main/java/io/nekohasekai/sagernet/ktx/Utils.kt
index 23e06e9..0aa311f 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/ktx/Utils.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/ktx/Utils.kt
@@ -31,10 +31,7 @@ import io.nekohasekai.sagernet.bg.Executable
 import io.nekohasekai.sagernet.database.DataStore
 import io.nekohasekai.sagernet.ui.MainActivity
 import io.nekohasekai.sagernet.ui.ThemedActivity
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlinx.coroutines.*
 import moe.matsuri.nb4a.utils.NGUtil
 import java.io.FileDescriptor
 import java.net.*
@@ -241,10 +238,13 @@ fun Fragment.needReload() {
 
 fun Fragment.needRestart() {
     snackbar("Restart APP to apply changes.").setAction(R.string.apply) {
-        Executable.killAll(true)
-        ProcessPhoenix.triggerRebirth(
-            requireContext(), Intent(requireContext(), MainActivity::class.java)
-        )
+        SagerNet.stopService()
+        val ctx = requireContext()
+        runOnDefaultDispatcher {
+            delay(500)
+            Executable.killAll(true)
+            ProcessPhoenix.triggerRebirth(ctx, Intent(ctx, MainActivity::class.java))
+        }
     }.show()
 }
 
diff --git a/app/src/main/java/io/nekohasekai/sagernet/ui/SettingsPreferenceFragment.kt b/app/src/main/java/io/nekohasekai/sagernet/ui/SettingsPreferenceFragment.kt
index 19b80b2..7a0fe34 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/ui/SettingsPreferenceFragment.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/ui/SettingsPreferenceFragment.kt
@@ -24,6 +24,7 @@ import io.nekohasekai.sagernet.utils.Theme
 import io.nekohasekai.sagernet.widget.AppListPreference
 import moe.matsuri.nb4a.Protocols
 import moe.matsuri.nb4a.ui.ColorPickerPreference
+import moe.matsuri.nb4a.ui.LongClickMenuPreference
 import moe.matsuri.nb4a.ui.LongClickSwitchPreference
 import moe.matsuri.nb4a.ui.MTUPreference
 
@@ -117,14 +118,14 @@ class SettingsPreferenceFragment : PreferenceFragmentCompat() {
         val requireTransproxy = findPreference<SwitchPreference>(Key.REQUIRE_TRANSPROXY)!!
         val transproxyPort = findPreference<EditTextPreference>(Key.TRANSPROXY_PORT)!!
         val transproxyMode = findPreference<SimpleMenuPreference>(Key.TRANSPROXY_MODE)!!
-        val enableLog = findPreference<LongClickSwitchPreference>(Key.ENABLE_LOG)!!
+        val logLevel = findPreference<LongClickMenuPreference>(Key.LOG_LEVEL)!!
         val mtu = findPreference<MTUPreference>(Key.MTU)!!
 
-        enableLog.setOnPreferenceChangeListener { _, _ ->
+        logLevel.setOnPreferenceChangeListener { _, _ ->
             needRestart()
             true
         }
-        enableLog.setOnLongClickListener {
+        logLevel.setOnLongClickListener {
             if (context == null) return@setOnLongClickListener true
 
             val view = EditText(context).apply {
diff --git a/app/src/main/java/moe/matsuri/nb4a/ui/LongClickMenuPreference.kt b/app/src/main/java/moe/matsuri/nb4a/ui/LongClickMenuPreference.kt
new file mode 100644
index 0000000..a0e7ab8
--- /dev/null
+++ b/app/src/main/java/moe/matsuri/nb4a/ui/LongClickMenuPreference.kt
@@ -0,0 +1,33 @@
+package moe.matsuri.nb4a.ui
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View
+import androidx.preference.PreferenceViewHolder
+import com.takisoft.preferencex.SimpleMenuPreference
+import io.nekohasekai.sagernet.R
+
+class LongClickMenuPreference
+@JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = com.takisoft.preferencex.simplemenu.R.attr.simpleMenuPreferenceStyle,
+    defStyleRes: Int = R.style.Preference_SimpleMenuPreference
+) : SimpleMenuPreference(
+    context, attrs, defStyleAttr, defStyleRes
+) {
+    private var mLongClickListener: View.OnLongClickListener? = null
+
+    override fun onBindViewHolder(holder: PreferenceViewHolder) {
+        super.onBindViewHolder(holder)
+        val itemView: View = holder.itemView
+        itemView.setOnLongClickListener {
+            mLongClickListener?.onLongClick(it) ?: true
+        }
+    }
+
+    fun setOnLongClickListener(longClickListener: View.OnLongClickListener) {
+        this.mLongClickListener = longClickListener
+    }
+
+}
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
index abb598d..56af5c8 100644
--- a/app/src/main/res/values/arrays.xml
+++ b/app/src/main/res/values/arrays.xml
@@ -1,5 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+
+    <string-array name="int_array_2">
+        <item>0</item>
+        <item>1</item>
+    </string-array>
+
+    <string-array name="int_array_3">
+        <item>0</item>
+        <item>1</item>
+        <item>2</item>
+    </string-array>
+
+    <string-array name="int_array_4">
+        <item>0</item>
+        <item>1</item>
+        <item>2</item>
+        <item>3</item>
+    </string-array>
+
+    <string-array name="int_array_5">
+        <item>0</item>
+        <item>1</item>
+        <item>2</item>
+        <item>3</item>
+        <item>4</item>
+    </string-array>
+
     <string-array name="bypass_private_route">
         <item>1.0.0.0/8</item>
         <item>2.0.0.0/7</item>
@@ -294,10 +321,6 @@
         <item>TPROXY</item>
     </string-array>
 
-    <string-array name="int_array_2">
-        <item>0</item>
-        <item>1</item>
-    </string-array>
 
     <string-array name="naive_proto_entry">
         <item>HTTPS</item>
@@ -315,13 +338,6 @@
         <item>@string/disable</item>
         <item>@string/auto</item>
     </string-array>
-    <string-array name="int_array_4">
-        <item>0</item>
-        <item>1</item>
-        <item>2</item>
-        <item>3</item>
-    </string-array>
-
     <string-array name="ipv6_mode">
         <item>@string/disable</item>
         <item>@string/enable</item>
@@ -348,11 +364,6 @@
         <item>leastPing</item>
     </string-array>
 
-    <string-array name="int_array_3">
-        <item>0</item>
-        <item>1</item>
-        <item>2</item>
-    </string-array>
 
     <string-array name="group_types">
         <item>@string/group_basic</item>
@@ -478,4 +489,12 @@
         <item>v2ray-plugin</item>
     </string-array>
 
+    <string-array name="log_level" translatable="false">
+        <item>none</item>
+        <item>warn</item>
+        <item>info</item>
+        <item>debug</item>
+        <item>trace</item>
+    </string-array>
+
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 1e22758..e28dac9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -524,5 +524,6 @@ Anyone can write advanced plugins, which can control NekoBox. please download an
     <string name="enable_clash_api">Enable Clash API</string>
     <string name="enable_clash_api_summary"><![CDATA[Provide clash api & yacd dashboard at 127.0.0.1:9090]]></string>
     <string name="xtls_flow">Flow (VLESS Sub-protocol)</string>
+    <string name="log_level">Log Level</string>
 
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/xml/global_preferences.xml b/app/src/main/res/xml/global_preferences.xml
index 38d279a..9fa1257 100644
--- a/app/src/main/res/xml/global_preferences.xml
+++ b/app/src/main/res/xml/global_preferences.xml
@@ -71,11 +71,14 @@
             app:summary="@string/show_direct_speed_sum"
             app:title="@string/show_direct_speed"
             app:useSimpleSummaryProvider="true" />
-        <moe.matsuri.nb4a.ui.LongClickSwitchPreference
+        <moe.matsuri.nb4a.ui.LongClickMenuPreference
+            app:defaultValue="0"
+            app:entries="@array/log_level"
+            app:entryValues="@array/int_array_5"
             app:icon="@drawable/ic_baseline_bug_report_24"
-            app:key="enableLog"
-            app:summary="@string/enable_log_sum"
-            app:title="@string/enable_log" />
+            app:key="logLevel"
+            app:title="@string/log_level"
+            app:useSimpleSummaryProvider="true" />
     </PreferenceCategory>
 
     <PreferenceCategory app:title="@string/cag_route">