Java tutorial
//package com.java2s; import android.content.Context; import android.telephony.TelephonyManager; public class Main { public static String getIMEI(Context context, String imei) { try { TelephonyManager telephonyManager = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); imei = telephonyManager.getDeviceId(); } catch (Exception e) { e.printStackTrace(); } return imei; } }