Getting IMEI in Android Using Java Using Kotlin

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Each legitimate SIM slot in mobile phone has unique International Mobile Equipment Identity or IMEI number, e.g. if someone has two SIMs, then phone comes with two IMEI numbers.

At the time of registration of SIM (on every new device/ reboot/ restart) phone sends IMEI number to service providers so that service providers (SP) can match the IMEI & SIM. SPs save associated number data in their databases. Some SPs keep record of every IMEI associated with the mobile number.

But, that doesn’t mean one can hack your mobile number merely by knowing IMEI number.

IMEI number is useful when someone’s phone get stolen, or lost & found. SPs are having such data.

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:orientation="vertical"
    android:layout_height="match_parent"
    tools:context="com.androindian.raj.imei.MainActivity">

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/imei"
        android:text="IMEI"/>

   </LinearLayout>

<?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:orientation="vertical"

android:layout_height="match_parent"

tools:context="com.androindian.raj.imei.MainActivity">

<Button

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/imei"

android:text="IMEI"/>

</LinearLayout>

MainActivity.kt

package com.androindian.raj.imei

import android.Manifest
import android.content.Context
import android.content.pm.PackageManager
import android.support.v4.app.ActivityCompat
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.telephony.TelephonyManager
import android.view.View
import android.widget.Button
import android.widget.Toast

class MainActivity : AppCompatActivity() {

   //  lateinit var button : Button
     

     lateinit var cd: ConnectionDetector


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        // val button =  findViewById(R.id.imei) as Button
        val button =  findViewById<Button>(R.id.imei)

        bt = findViewById(R.id.network)           

        button.setOnClickListener(View.OnClickListener {
            val tel = getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager

            //imei = (TextView) findViewById(R.id.textView2);
            if (ActivityCompat.checkSelfPermission(this@MainActivity,
                            Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
                // TODO: Consider calling
                //    ActivityCompat#requestPermissions
                // here to request the missing permissions, and then overriding
                //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                //                                          int[] grantResults)
                // to handle the case where the user grants the permission. See the documentation
                // for ActivityCompat#requestPermissions for more details.
                return@OnClickListener
            }

            val s1 = tel.deviceId
            Toast.makeText(applicationContext,
                    "" + s1, Toast.LENGTH_LONG).show()
        })
    }
}

package com.androindian.raj.imei

import android.Manifest

import android.content.Context

import android.content.pm.PackageManager

import android.support.v4.app.ActivityCompat

import android.support.v7.app.AppCompatActivity

import android.os.Bundle

import android.telephony.TelephonyManager

import android.view.View

import android.widget.Button

import android.widget.Toast

class MainActivity : AppCompatActivity() {

// lateinit var button : Button

lateinit var cd: ConnectionDetector

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_main)

// val button = findViewById(R.id.imei) as Button

val button = findViewById<Button>(R.id.imei)

bt = findViewById(R.id.network)

button.setOnClickListener(View.OnClickListener {

val tel = getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager

//imei = (TextView) findViewById(R.id.textView2);

if (ActivityCompat.checkSelfPermission(this@MainActivity,

Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {

// TODO: Consider calling

// ActivityCompat#requestPermissions

// here to request the missing permissions, and then overriding

// public void onRequestPermissionsResult(int requestCode, String[] permissions,

// int[] grantResults)

// to handle the case where the user grants the permission. See the documentation

// for ActivityCompat#requestPermissions for more details.

return@OnClickListener

}

val s1 = tel.deviceId

Toast.makeText(applicationContext,

"" + s1, Toast.LENGTH_LONG).show()

})

}

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Getting IMEI in Android Using Java Using Kotlin

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