A. Find IMEI Number in Android

Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button.

Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="50dp"
        android:textColor="#4169E1"
        android:textSize="18sp"
        android:text="IMEI Number" />
 
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:textSize="15sp"
        android:text="IMEI" />
 
</RelativeLayout>

Step 3 : Open src -> package -> MainActivity.java and add following code :

package balaji.imei_number;
 
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.telephony.TelephonyManager;
import android.widget.TextView;
 
public class MainActivity extends Activity {
 
 TelephonyManager tel;
 TextView imei;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
                
        tel = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        
        imei = (TextView) findViewById(R.id.textView2);
        imei.setText(tel.getDeviceId().toString());
    }
}

Step 4 : Open AndroidManifest.xml and add following code :

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="balaji.imei_number"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />
    
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
 
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>

Step 5 : Our output will be like this :

Run on real device, you will get the IMEI number