diff --git a/app/src/main/java/com/xypower/mpremote/DeviceActivity.java b/app/src/main/java/com/xypower/mpremote/DeviceActivity.java
index 4c08e84..548cdd1 100644
--- a/app/src/main/java/com/xypower/mpremote/DeviceActivity.java
+++ b/app/src/main/java/com/xypower/mpremote/DeviceActivity.java
@@ -8,9 +8,13 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.res.Resources;
+import android.net.ConnectivityManager;
 import android.net.wifi.WifiManager;
 import android.os.Bundle;
 import android.os.Handler;
+import android.telephony.SignalStrength;
+import android.telephony.TelephonyManager;
+import android.telephony.ims.ImsMmTelManager;
 import android.text.Html;
 import android.text.TextUtils;
 import android.text.format.Formatter;
@@ -60,6 +64,9 @@ public class DeviceActivity extends AppCompatActivity {
     private static final String KEY_RO_SERIALNO = "ro.serialno";
     private static final String KEY_RO_MODEMS_MAX_COUNT = "telephony.active_modems.max_count";
     private static final String KEY_RO_SIGNAL_STRNGTH_PREFIX = "vendor.ril.nw.signalstrength.lte.";
+
+    private static final String KEY_GSM_VENDOR_NAME = "gsm.operator.alpha";
+
     // private static final String KEY_RO_MODEMS_MAX_COUNT = "telephony.active_modems.max_count";
 
     // // [ro.bootimage.build.date.utc]: [1716880263]
@@ -123,13 +130,41 @@ public class DeviceActivity extends AppCompatActivity {
             AdbKeyPair.generate(priKeyFile, pubKeyFile);
         }
 
+
+        mAdbKeyPair = AdbKeyPair.read(priKeyFile, pubKeyFile);
+        final Context context = getApplicationContext();
+
+        binding.takePhoto1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                takePhoto(1, 255, true);
+            }
+        });
+
+        binding.takeVideo1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                takeVideo(1, 255, false);
+            }
+        });
+
+        mProgressDialog = ProgressDialog.show(this, "", "连接中", true, true);
+        mProgressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
+            @Override
+            public void onCancel(DialogInterface dialogInterface) {
+                DeviceActivity.this.finish();
+            }
+        });
+
+        loadDeviceInfo(context);
+    }
+
+    protected void loadDeviceInfo(final Context context) {
         final File fileTmp = new File(getFilesDir(), "tmp");
         if (!fileTmp.exists()) {
             fileTmp.mkdirs();
         }
 
-        mAdbKeyPair = AdbKeyPair.read(priKeyFile, pubKeyFile);
-        final Context context = getApplicationContext();
 
         (new Thread(new Runnable() {
             @Override
@@ -145,6 +180,7 @@ public class DeviceActivity extends AppCompatActivity {
                     @Override
                     public void run() {
                         mProgressDialog.dismiss();
+                        showAppInfo();
                     }
                 });
             }
@@ -300,30 +336,9 @@ public class DeviceActivity extends AppCompatActivity {
                 }
 
 
-            }
-        })).start();
 
-        binding.takePhoto1.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                takePhoto(1, 255, true);
-            }
-        });
-
-        binding.takeVideo1.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                takeVideo(1, 255, false);
-            }
-        });
-
-        mProgressDialog = ProgressDialog.show(this, "", "连接中", true, true);
-        mProgressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
-            @Override
-            public void onCancel(DialogInterface dialogInterface) {
-                DeviceActivity.this.finish();
             }
-        });
+        })).start();
     }
 
     protected boolean pullFile(Dadb adb, String remoteFilePath, File localFilePath) {
@@ -547,6 +562,24 @@ public class DeviceActivity extends AppCompatActivity {
         }
     }
 
+
+    public static int calculateSignalLevel(int rsrp, int numLevels) {
+        int signalLevel = 0;
+        if (rsrp >= -97) {
+            signalLevel = 4;
+        } else if (rsrp >= -107) {
+            signalLevel = 3;
+        } else if (rsrp >= -117) {
+            signalLevel = 2;
+        } else if (rsrp >= -125) {
+            signalLevel = 1;
+        } else if (rsrp >= -140) {
+            signalLevel = 0;
+        }
+
+        return signalLevel;
+    }
+
     private void showAppInfo() {
         ActionBar actionBar = getSupportActionBar();
 
@@ -565,9 +598,11 @@ public class DeviceActivity extends AppCompatActivity {
 
         StringBuilder stringBuilder = new StringBuilder();
 
+        ConnectivityManager mConnectivityManager;
+
         if (mProps.containsKey(KEY_RO_SERIALNO)) {
             String val = (String)mProps.get(KEY_RO_SERIALNO);
-            appendKeyValue(stringBuilder, "序列号", val);
+            appendKeyValue(stringBuilder, "序列号", val, true);
         }
 
         int numberOfSimcard = 0;
@@ -587,13 +622,18 @@ public class DeviceActivity extends AppCompatActivity {
                     if (!TextUtils.isEmpty(signalLevel)) {
                         signalLevel += "/";
                     }
-                    int ss = WifiManager.calculateSignalLevel(signalStrength, RSSI_LEVELS);
+
+                    TelephonyManager telephonyManager;
+
+                    SignalStrength signalStrength1;
+
+                    int ss = calculateSignalLevel(signalStrength, RSSI_LEVELS);
                     signalLevel += Integer.toString(ss);
                 }
             }
         }
 
-        appendKeyValue(stringBuilder, "CMDID", mAppConfig.cmdid);
+        appendKeyValue(stringBuilder, "CMDID", mAppConfig.cmdid, true);
 
         appendKeyValue(stringBuilder, "主站", mAppConfig.server + ":" + Integer.toString(mAppConfig.port));
 
@@ -604,6 +644,12 @@ public class DeviceActivity extends AppCompatActivity {
             appendKeyValue(stringBuilder, "APP版本", val);
         }
 
+        String vendorName = "";
+        if (mProps.containsKey(KEY_GSM_VENDOR_NAME)) {
+            vendorName = mProps.get(KEY_GSM_VENDOR_NAME);
+        }
+
+        appendKeyValue(stringBuilder, "移动运营商", vendorName);
         appendKeyValue(stringBuilder, "移动信号", signalLevel);
 
         if (mBatteryVoltage != -1) {
@@ -617,7 +663,15 @@ public class DeviceActivity extends AppCompatActivity {
     }
 
     private void appendKeyValue(StringBuilder stringBuilder, String key, String val) {
-        stringBuilder.append(key + "：<font color=\"red\"><b>" + val + "</b></font>");
+        appendKeyValue(stringBuilder, key, val, false);
+    }
+
+    private void appendKeyValue(StringBuilder stringBuilder, String key, String val, boolean highlignt) {
+        if (highlignt) {
+            stringBuilder.append(key + "：<font color=\"red\"><b>" + val + "</b></font>");
+        } else {
+            stringBuilder.append(key + "：" + val);
+        }
         stringBuilder.append("<br>");
     }