Java tutorial
//package com.java2s; import android.content.Context; import android.telephony.TelephonyManager; import android.text.TextUtils; public class Main { public static String getIMSI(Context context) { TelephonyManager mTelephonyMgr = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); String imsi = mTelephonyMgr.getSubscriberId(); if (TextUtils.isEmpty(imsi)) { imsi = "000000000000000"; } return imsi; } }