How to get default phone IMEI in android?

This example demonstrate about How to get default phone IMEI 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.

In the above code, we have taken a text view to show phone IMEI.

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.getImei());
      }
   }

   @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.getImei());
            }
      }
   }
}

Step 3 − Add the following code toAndroidManifest.xml

Click here to download the project code