Java tutorial
//package com.java2s; import android.content.Context; import android.telephony.TelephonyManager; public class Main { public static String getIMSI(Context context) { Object objTemp = context.getSystemService(Context.TELEPHONY_SERVICE); TelephonyManager phoneMgr; String imsi = ""; if (objTemp != null && objTemp instanceof TelephonyManager) { phoneMgr = (TelephonyManager) objTemp; imsi = phoneMgr.getSubscriberId(); } return imsi; } }