Get Default Phone Network Operator Name in Android

This example demonstrate about How to get default phone Network operator name in android.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:gravity="center"    android:layout_height="match_parent"    tools:context=".MainActivity"    android:orientation="vertical">    <TextView       android:id="@+id/text"       android:textSize="30sp"       android:layout_width="wrap_content"       android:layout_height="wrap_content" /> </LinearLayout>

In the above code, we have taken a text view to show the phone network operator name.

Step 3 − Add the following code to java/MainActivity.xml

package com.example.myapplication; import android.Manifest; import android.content.Context; import android.content.pm.PackageManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.annotation.RequiresApi; import android.support.v4.app.ActivityCompat; import android.support.v7.app.AppCompatActivity; import android.telephony.TelephonyManager; import android.widget.TextView; import static android.Manifest.permission.READ_PHONE_NUMBERS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_SMS; public class MainActivity extends AppCompatActivity {    private static final int PERMISSION_REQUEST_CODE = 100;    TextView textView;    TelephonyManager telephonyManager;    @RequiresApi(api = Build.VERSION_CODES.P)    @Override    protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);       textView = findViewById(R.id.text);       telephonyManager = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);       if (ActivityCompat.checkSelfPermission(this, READ_SMS) != PackageManager.PERMISSION_GRANTED &&          ActivityCompat.checkSelfPermission(this, READ_PHONE_NUMBERS) != PackageManager.PERMISSION_GRANTED &&          ActivityCompat.checkSelfPermission(this, READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {             ActivityCompat.requestPermissions(this, new String[]{READ_SMS, READ_PHONE_NUMBERS, READ_PHONE_STATE}, PERMISSION_REQUEST_CODE);       } else {          textView.setText(""+telephonyManager.getNetworkOperatorName());       }    }    @RequiresApi(api = Build.VERSION_CODES.P)    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {       super.onRequestPermissionsResult(requestCode, permissions, grantResults);       switch (requestCode) {          case PERMISSION_REQUEST_CODE:             if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_SMS) !=                PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this,                Manifest.permission.READ_PHONE_NUMBERS) != PackageManager.PERMISSION_GRANTED &&                ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) !=                PackageManager.PERMISSION_GRANTED) {                return;             } else {                textView.setText(""+telephonyManager.getNetworkOperatorName());             }       }    } }

Step 3 − Add the following code toAndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.myapplication">    <uses-permission android:name="android.permission.READ_PHONE_NUMBERS" />    <uses-permission android:name="android.permission.READ_PHONE_STATE" />    <application       android:allowBackup="true"       android:icon="@mipmap/ic_launcher"       android:label="@string/app_name"       android:roundIcon="@mipmap/ic_launcher_round"       android:supportsRtl="true"       android:theme="@style/AppTheme">       <activity android:name=".MainActivity">          <intent-filter>             <action android:name="android.intent.action.MAIN" />             <category android:name="android.intent.category.LAUNCHER" />          </intent-filter>       </activity>    </application> </manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –

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