diff --git a/index.ts b/index.ts
index b9f2981..8caacc5 100644
--- a/index.ts
+++ b/index.ts
@@ -11,8 +11,14 @@ import {
     sendMessage
 } from "./src/ListSMS";
 import {controlMobileData, reconnect, status} from "./src/MobileData";
+import {getSignalInfo, lteBand} from "./src/Signal";
+
 const huawei = require('./jslib/public');
 
+async function delay(ms: number) {
+    return new Promise(res => setTimeout(res, ms));
+}
+
 // @ts-ignore
 yargs(hideBin(process.argv))
     .command('sendSMS', 'send SMS to contact or group of contacts', (yargs) => {
@@ -37,7 +43,7 @@ yargs(hideBin(process.argv))
                 type: "string",
             })
     }, async (argv) => {
-        huawei.publicKey.rsapadingtype=argv.rsapadingtype||"1";
+        huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
         await login(argv.url, argv.username, argv.password);
         try {
             const sessionData = await startSession(argv.url);
@@ -51,7 +57,7 @@ yargs(hideBin(process.argv))
         }
     }).command('contacts', 'get contact list with the latest sms messages', (yargs) => {
     // @ts-ignore
-        return yargs
+    return yargs
         .positional('url', {
             describe: 'huawei host',
             default: '192.168.8.1'
@@ -74,8 +80,8 @@ yargs(hideBin(process.argv))
             default: 'none'
         })
 }, async (argv) => {
-    huawei.publicKey.rsapadingtype=argv.rsapadingtype||"1";
-        await login(argv.url, argv.username, argv.password);
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
+    await login(argv.url, argv.username, argv.password);
     try {
         const sessionData = await startSession(argv.url);
         switch (argv.exportFormat) {
@@ -162,7 +168,7 @@ yargs(hideBin(process.argv))
             default: 'none'
         })
 }, async (argv) => {
-    huawei.publicKey.rsapadingtype=argv.rsapadingtype||"1";
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
     await login(argv.url, argv.username, argv.password);
     try {
         const sessionData = await startSession(argv.url);
@@ -216,7 +222,7 @@ yargs(hideBin(process.argv))
             default: false
         })
 }, async (argv) => {
-    huawei.publicKey.rsapadingtype=argv.rsapadingtype||"1";
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
     await login(argv.url, argv.username, argv.password);
     try {
         const sessionData = await startSession(argv.url);
@@ -266,7 +272,7 @@ yargs(hideBin(process.argv))
             default: 'none'
         })
 }, async (argv) => {
-    huawei.publicKey.rsapadingtype=argv.rsapadingtype||"1";
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
     await login(argv.url, argv.username, argv.password);
     try {
         const sessionData = await startSession(argv.url);
@@ -310,7 +316,7 @@ yargs(hideBin(process.argv))
             type: 'string'
         })
 }, async (argv: any) => {
-    huawei.publicKey.rsapadingtype=argv.rsapadingtype||"1";
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
     await login(argv.url, argv.username, argv.password);
     try {
         const sessionData = await startSession(argv.url);
@@ -338,7 +344,7 @@ yargs(hideBin(process.argv))
             describe: 'change mobile data to on,off or reconnect',
         })
 }, async (argv: any) => {
-    huawei.publicKey.rsapadingtype=argv.rsapadingtype||"1";
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
     await login(argv.url, argv.username, argv.password);
     try {
         const sessionData = await startSession(argv.url);
@@ -382,7 +388,7 @@ yargs(hideBin(process.argv))
             default: 'none'
         })
 }, async (argv: any) => {
-    huawei.publicKey.rsapadingtype=argv.rsapadingtype||"1";
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
     await login(argv.url, argv.username, argv.password);
     try {
         const sessionData = await startSession(argv.url);
@@ -404,10 +410,73 @@ yargs(hideBin(process.argv))
     } finally {
         await logout(argv.url);
     }
+}).command('signalInfo', 'current device signal status', (yargs: any) => {
+// @ts-ignore
+    return yargs
+        .positional('url', {
+            describe: 'huawei host',
+            default: '192.168.8.1'
+        }).positional('username', {
+            describe: 'huawei username',
+            default: 'admin'
+        })
+        .positional('password', {
+            describe: 'huawei password',
+            type: 'string'
+        }).positional('turn', {
+            alias: 't',
+            describe: 'Request Signal info until interrupted',
+            default: false,
+        })
+}, async (argv: any) => {
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
+    await login(argv.url, argv.username, argv.password);
+    try {
+        const sessionData = await startSession(argv.url);
+        if (argv.turn) {
+            while (true) {
+                await getSignalInfo(sessionData);
+                await delay(2500)
+            }
+        } else {
+            await getSignalInfo(sessionData);
+        }
+    } finally {
+        await logout(argv.url);
+    }
+}).command('changeLteBand', 'change LTE band', (yargs: any) => {
+// @ts-ignore
+    return yargs
+        .positional('url', {
+            describe: 'huawei host',
+            default: '192.168.8.1'
+        }).positional('username', {
+            describe: 'huawei username',
+            default: 'admin'
+        })
+        .positional('password', {
+            describe: 'huawei password',
+            type: 'string'
+        }).positional('band', {
+            alias: 'band',
+            describe: 'desirable LTE band number, separated by + char (example 1+3+20).If you want to use every supported bands, write \'AUTO\'.", "AUTO"',
+            default: 'AUTO',
+        })
+}, async (argv: any) => {
+    if (!argv.band){
+        throw new Error('Band is empty')
+    }
+    huawei.publicKey.rsapadingtype = argv.rsapadingtype || "1";
+    await login(argv.url, argv.username, argv.password);
+    try {
+       await lteBand(await startSession(argv.url),argv.band);
+    } finally {
+        await logout(argv.url);
+    }
 })
     .option('rsapadingtype', {
         type: 'string',
         description: 'rsapadingtype, to check your run in web-console: MUI.LoginStateController.rsapadingtype',
-        default:'1'
+        default: '1'
     })
     .parse()
diff --git a/package.json b/package.json
index c9c6441..a0d9b55 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "huawei-hilink",
-  "version": "1.1.4",
+  "version": "1.1.5",
   "description": "huawei-hilink client",
   "main": "index.js",
   "scripts": {
@@ -14,6 +14,9 @@
     "reconnected": "node index.js  mobileData --mode=reconnect --url=192.168.89.1 --password=testPassword",
     "monitoring": "node index.js monitoring --url=192.168.89.1 --password=testPassword",
     "messages": "node index.js messages --url=192.168.89.1 --deleteAfter=true --password=testPassword",
+    "signalInfo": "node index.js signalInfo --url=192.168.89.1 --password=testPassword",
+    "signalInfoLoop": "node index.js signalInfo --turn=true --url=192.168.89.1 --password=testPassword",
+    "changeLteBand": "node index.js changeLteBand --url=192.168.89.1 --band=\"AUTO\" --password=testPassword",
     "lint": "eslint src --ext .ts src",
     "build": "tsc --build",
     "lint:fix": "eslint --fix src --ext .ts"
diff --git a/src/Signal.ts b/src/Signal.ts
new file mode 100644
index 0000000..7fa96c7
--- /dev/null
+++ b/src/Signal.ts
@@ -0,0 +1,73 @@
+import parser from "xml2js";
+
+import {SessionData} from "./startSession";
+import {restCalls} from "./utils/DefaultRestCalls";
+import {getSessionHeaders} from "./utils/HuaweiUtils";
+
+const huawei = require('../jslib/public');
+
+function _4GType(data:string):string {
+  if ((data === '20880800C5') || (data === '20000800C5')) { return "AUTO"; }
+  let dataOut = "";
+  if ((parseInt(data, 16) & 0x1) === 0x1) {
+    dataOut = "B1+";
+  }
+  if ((parseInt(data, 16) & 0x4) === 0x4) {
+    dataOut += "B3+";
+  }
+  if ((parseInt(data, 16) & 0x40) === 0x40) {
+    dataOut += "B7+";
+  }
+  if ((parseInt(data, 16) & 0x80000) === 0x80000) {
+    dataOut += "B20";
+  }
+  dataOut = dataOut.replace(/\++$/, "");
+  return dataOut;
+}
+
+export async function getSignalInfo(sessionData: SessionData) {
+  const mode = await lteMode(sessionData);
+  const resp = await restCalls.fetchDataRaw(`http://${sessionData.url}/api/device/signal`, 'GET', await getSessionHeaders(sessionData.url));
+  if (resp.headers.__requestverificationtoken) {
+    huawei.publicSession.token2 = resp.headers.__requestverificationtoken;
+  }
+  const json = await parser.parseStringPromise(resp.data);
+  const vars = ['rssi', 'rsrp', 'rsrq', 'sinr', 'dlbandwidth', 'ulbandwidth', 'band', 'cell_id', 'plmn'];
+  let resultString = '';
+  const response = json.response;
+  for (let i = 0; i < vars.length; i++) {
+    resultString += ` ${vars[i]}: ${response[vars[i]][0]}`;
+  }
+  console.log(`LTE Band: ${_4GType(mode.LTEBand[0])}${resultString}`);
+}
+
+export async function lteMode(sessionData: SessionData) {
+  const resp = await restCalls.fetchDataRaw(`http://${sessionData.url}/api/net/net-mode`, 'GET', await getSessionHeaders(sessionData.url));
+  if (resp.headers.__requestverificationtoken) {
+    huawei.publicSession.token2 = resp.headers.__requestverificationtoken;
+  }
+  const json = await parser.parseStringPromise(resp.data);
+  return json.response;
+}
+
+export async function lteBand(sessionData: SessionData, band: string) {
+  let ltesum:string;
+  if (band.toUpperCase() === "AUTO") {
+    ltesum = "7FFFFFFFFFFFFFFF";
+  } else {
+    const bs:string[] = band.split("+");
+    let ltesum0 = 0;
+    for (let i = 0; i < bs.length; i++) {
+      ltesum0 += 2 ** (parseInt(bs[i], 10) - 1);
+    }
+    ltesum = ltesum0.toString(16);
+  }
+  const data = await huawei.doRSAEncrypt(sessionData, `<?xml version: "1.0" encoding="UTF-8"?><request><NetworkMode>03</NetworkMode><NetworkBand>3FFFFFFF</NetworkBand><LTEBand>${ltesum}</LTEBand></request>`);
+  const resp = await restCalls.sendDataRaw(`http://${sessionData.url}/api/net/net-mode`, 'POST', data, await getSessionHeaders(sessionData.url));
+  huawei.publicSession.token2 = resp.headers.__requestverificationtoken;
+  const json = await parser.parseStringPromise(resp.data);
+  if (json.response !== 'OK') {
+    throw new Error(`LTEBand changing error: ${JSON.stringify(json)}`);
+  }
+  console.log(`LTEBand changed to ${_4GType((await lteMode(sessionData)).LTEBand[0])}`);
+}
diff --git a/src/startSession.ts b/src/startSession.ts
index f09bc76..110c3da 100644
--- a/src/startSession.ts
+++ b/src/startSession.ts
@@ -48,7 +48,7 @@ export async function logout(url: string) {
     huawei.publicSession.token2 = resp.headers.__requestverificationtoken;
     const message = await parser.parseStringPromise(resp.data);
     if (message.response !== 'OK') {
-      throw new Error(`Logout error: ${resp}`);
+      throw new Error(`Logout error: ${resp.data}`);
     }
   }
 }