Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; import android.text.TextUtils; public class Main { public static boolean isMobileNum(String mobiles) { Pattern p = Pattern.compile("^((13[0-9])|(15[^4,\\D])|(17[0-9])|(14[0-9])|(18[0-9]))\\d{8}$"); Matcher m = p.matcher(mobiles); return !TextUtils.isEmpty(mobiles) && m.matches(); } }