diff --git a/app/src/main/java/com/qwe7002/telegram_rc/chat_command_service.java b/app/src/main/java/com/qwe7002/telegram_rc/chat_command_service.java
index 08e2e2c..6513a26 100644
--- a/app/src/main/java/com/qwe7002/telegram_rc/chat_command_service.java
+++ b/app/src/main/java/com/qwe7002/telegram_rc/chat_command_service.java
@@ -683,7 +683,7 @@ private void receive_handle(@NotNull JsonObject result_obj, boolean get_id_only)
                     request_body.text = getString(R.string.system_message_head) + "\n" + getString(R.string.no_permission);
                     break;
                 }
-                remote_control_func.force_switch_nic_tether();
+                remote_control_func.force_switch_nic_tether(context);
                 request_body.text = getString(R.string.system_message_head) + "\n" + "done.";
                 break;
             case "/switchtether":
diff --git a/app/src/main/java/com/qwe7002/telegram_rc/static_class/remote_control_func.java b/app/src/main/java/com/qwe7002/telegram_rc/static_class/remote_control_func.java
index 4bb8856..c07bd9f 100644
--- a/app/src/main/java/com/qwe7002/telegram_rc/static_class/remote_control_func.java
+++ b/app/src/main/java/com/qwe7002/telegram_rc/static_class/remote_control_func.java
@@ -4,6 +4,7 @@
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
+import android.os.PowerManager;
 
 import com.fitc.wifihotspot.TetherManager;
 
@@ -55,12 +56,16 @@ public static void enable_vpn_ap(android.net.wifi.WifiManager wifi_manager) {
         com.qwe7002.telegram_rc.root_kit.activity_manage.start_foreground_service(const_value.VPN_HOTSPOT_PACKAGE_NAME, const_value.VPN_HOTSPOT_PACKAGE_NAME + ".RepeaterService");
     }
 
-    public static void force_switch_nic_tether() {
+    public static void force_switch_nic_tether(Context context) {
         try {
-            com.qwe7002.telegram_rc.root_kit.shell.run_shell_command("input keyevent 26");
-            Thread.sleep(1000);
+            PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+            //noinspection deprecation
+            if (!powerManager.isScreenOn()) {
+                com.qwe7002.telegram_rc.root_kit.shell.run_shell_command("input keyevent 26");
+                Thread.sleep(1000);
+            }
             com.qwe7002.telegram_rc.root_kit.activity_manage.start_activity("com.android.settings", ".TetherSettings");
-            Thread.sleep(1000);
+            Thread.sleep(3000);
             com.qwe7002.telegram_rc.root_kit.shell.run_shell_command("input keyevent 20");
             Thread.sleep(1000);
             com.qwe7002.telegram_rc.root_kit.shell.run_shell_command("input keyevent 20");
@@ -73,7 +78,6 @@ public static void force_switch_nic_tether() {
             Thread.sleep(1000);
             com.qwe7002.telegram_rc.root_kit.shell.run_shell_command("input keyevent 4");
             Thread.sleep(1000);
-            com.qwe7002.telegram_rc.root_kit.shell.run_shell_command("input keyevent 26");
         } catch (InterruptedException e) {
             e.printStackTrace();
         }