diff --git a/js/certify.js b/js/certify.js
index 7cbee8f1d..616760c72 100644
--- a/js/certify.js
+++ b/js/certify.js
@@ -13,16 +13,41 @@ function certify_win_open(type, url)
     }
     else if(type == 'kcp-hp')
     {
-        var return_gubun;
-        var width  = 410;
-        var height = 500;
+        if($("input[name=veri_up_hash]").size() < 1)
+                $("input[name=cert_no]").after('<input type="hidden" name="veri_up_hash" value="">');
 
-        var leftpos = screen.width  / 2 - ( width  / 2 );
-        var toppos  = screen.height / 2 - ( height / 2 );
+        if( navigator.userAgent.indexOf("Android") > - 1 || navigator.userAgent.indexOf("iPhone") > - 1 )
+        {
+            var $frm = $(event.target.form);
+            if($("#kcp_cert").size() < 1) {
+                $frm.wrap('<div id="cert_info"></div>');
 
-        var winopts  = "width=" + width   + ", height=" + height + ", toolbar=no,status=no,statusbar=no,menubar=no,scrollbars=no,resizable=no";
-        var position = ",left=" + leftpos + ", top="    + toppos;
-        var AUTH_POP = window.open(url,'auth_popup', winopts + position);
+                $("#cert_info").append('<form name="form_temp" method="post">')
+                               .after('<iframe id="kcp_cert" name="kcp_cert" width="100%" height="700" frameborder="0" scrolling="no" style="display:none"></iframe>');
+            }
+
+            var temp_form = document.form_temp;
+            temp_form.target = "kcp_cert";
+            temp_form.action = url;
+
+            document.getElementById( "cert_info" ).style.display = "none";
+            document.getElementById( "kcp_cert"  ).style.display = "";
+
+            temp_form.submit();
+        }
+        else
+        {
+            var return_gubun;
+            var width  = 410;
+            var height = 500;
+
+            var leftpos = screen.width  / 2 - ( width  / 2 );
+            var toppos  = screen.height / 2 - ( height / 2 );
+
+            var winopts  = "width=" + width   + ", height=" + height + ", toolbar=no,status=no,statusbar=no,menubar=no,scrollbars=no,resizable=no";
+            var position = ",left=" + leftpos + ", top="    + toppos;
+            var AUTH_POP = window.open(url,'auth_popup', winopts + position);
+        }
     }
     else if(type == 'lg-hp')
     {
diff --git a/mobile/skin/member/basic/register_form.skin.php b/mobile/skin/member/basic/register_form.skin.php
index 941399c9f..db17e0fa2 100644
--- a/mobile/skin/member/basic/register_form.skin.php
+++ b/mobile/skin/member/basic/register_form.skin.php
@@ -8,7 +8,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
 <div class="mbskin">
     <script src="<?php echo G5_JS_URL ?>/jquery.register_form.js"></script>
     <?php if($config['cf_cert_use'] && ($config['cf_cert_ipin'] || $config['cf_cert_hp'])) { ?>
-    <script src="<?php echo G5_JS_URL ?>/certify.js"></script>
+    <script src="<?php echo G5_JS_URL ?>/certify.js?v=<?php echo G5_JS_VER; ?>"></script>
     <?php } ?>
 
     <form name="fregisterform" id="fregisterform" action="<?php echo $register_action_url ?>" onsubmit="return fregisterform_submit(this);" method="post" enctype="multipart/form-data" autocomplete="off">
@@ -122,7 +122,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
         </tr>
         <?php } ?>
 
-        <?php if ($config['cf_use_hp']) {  ?>
+        <?php if ($config['cf_use_hp'] || $config['cf_cert_hp']) {  ?>
         <tr>
             <th scope="row"><label for="reg_mb_hp">휴대폰번호<?php if ($config['cf_req_hp']) { ?><strong class="sound_only">필수</strong><?php } ?></label></th>
             <td>
diff --git a/plugin/kcpcert/kcpcert_form.php b/plugin/kcpcert/kcpcert_form.php
index 8a62e0c39..42bcec548 100644
--- a/plugin/kcpcert/kcpcert_form.php
+++ b/plugin/kcpcert/kcpcert_form.php
@@ -41,7 +41,17 @@ $up_hash = $ct_cert->make_hash_data( $home_dir, $hash_data );
 $ct_cert->mf_clear();
 ?>
 
-<form name="form_auth" method="post" target="auth_popup" action="<?php echo $cert_url ?>">
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+<?php if(is_mobile()) { ?>
+<meta name="viewport" content="user-scalable=yes, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, width=device-width, target-densitydpi=medium-dpi" >
+<?php } ?>
+</head>
+
+<body oncontextmenu="return false;" ondragstart="return false;" onselectstart="return false;">
+<form name="form_auth" method="post" action="<?php echo $cert_url ?>">
 <!-- 유저네임 -->
 <input type="hidden" name="user_name"    value="" />
 <!-- 주문번호 -->
@@ -67,6 +77,11 @@ $ct_cert->mf_clear();
 <!-- cert_enc_use 필수 (고정값 : 메뉴얼 참고) -->
 <input type="hidden" name="cert_enc_use" value="Y"/>
 
+<?php if(is_mobile()) { ?>
+<!-- cert_able_yn input 비활성화 설정 -->
+<input type="hidden" name="cert_able_yn" value=""/>
+<?php } ?>
+
 <input type="hidden" name="res_cd"       value=""/>
 <input type="hidden" name="res_msg"      value=""/>
 
@@ -82,5 +97,53 @@ $ct_cert->mf_clear();
 </form>
 
 <script>
-document.form_auth.submit();
-</script>
\ No newline at end of file
+window.onload = function() {
+    cert_page();
+}
+
+// 인증 요청 시 호출 함수
+function cert_page()
+{
+    var frm = document.form_auth;
+
+    if ( ( frm.req_tx.value == "auth" || frm.req_tx.value == "otp_auth" ) )
+    {
+        frm.action="./kcpcert_result.php";
+
+       // MOBILE
+        if( ( navigator.userAgent.indexOf("Android") > - 1 || navigator.userAgent.indexOf("iPhone") > - 1 ) )
+        {
+            self.name="kcp_cert";
+        }
+        // PC
+        else
+        {
+            frm.target="kcp_cert";
+        }
+
+        frm.submit();
+
+        window.close();
+    }
+
+    else if ( frm.req_tx.value == "cert" )
+    {
+        if( ( navigator.userAgent.indexOf("Android") > - 1 || navigator.userAgent.indexOf("iPhone") > - 1 ) ) // 스마트폰인 경우
+        {
+            window.parent.$("input[name=veri_up_hash]").val(frm.up_hash.value); // up_hash 데이터 검증을 위한 필드
+            self.name="auth_popup";
+        }
+        else // 스마트폰 아닐때
+        {
+            window.opener.$("input[name=veri_up_hash]").val(frm.up_hash.value); // up_hash 데이터 검증을 위한 필드
+            frm.target = "auth_popup";
+        }
+
+        frm.action="<?php echo $cert_url; ?>";
+        frm.submit();
+    }
+}
+</script>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/plugin/kcpcert/kcpcert_result.php b/plugin/kcpcert/kcpcert_result.php
index 255122187..5eaab75ab 100644
--- a/plugin/kcpcert/kcpcert_result.php
+++ b/plugin/kcpcert/kcpcert_result.php
@@ -180,9 +180,26 @@ else if( $cert_enc_use != "Y" )
 $ct_cert->mf_clear();
 ?>
 
+<form name="form_auth" method="post">
+    <?php echo $sbParam; ?>
+</form>
+
 <script>
 $(function() {
-    var $opener = window.opener;
+    var $opener;
+    var is_mobile = false;
+
+    if( ( navigator.userAgent.indexOf("Android") > - 1 || navigator.userAgent.indexOf("iPhone") > - 1 ) ) { // 스마트폰인 경우
+        $opener = window.parent;
+        is_mobile = true;
+    } else {
+        $opener = window.opener;
+    }
+
+    // up_hash 검증
+    if( document.form_auth.up_hash.value != $opener.$("input[name=veri_up_hash]").val() ) {
+        alert("up_hash 변조 위험있음");
+    }
 
     // 인증정보
     $opener.$("input[name=cert_type]").val("<?php echo $cert_type; ?>");
@@ -190,7 +207,13 @@ $(function() {
     $opener.$("input[name=mb_hp]").val("<?php echo $phone_no; ?>").attr("readonly", true);
     $opener.$("input[name=cert_no]").val("<?php echo $md5_cert_no; ?>");
 
+    if(is_mobile) {
+        $opener.$("#cert_info").css("display", "");
+        $opener.$("#kcp_cert" ).css("display", "none");
+    }
+
     alert("본인의 휴대폰번호로 확인 되었습니다.");
+
     window.close();
 });
 </script>
diff --git a/skin/member/basic/register_form.skin.php b/skin/member/basic/register_form.skin.php
index 3f2076758..436bee0e9 100644
--- a/skin/member/basic/register_form.skin.php
+++ b/skin/member/basic/register_form.skin.php
@@ -10,7 +10,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
 
     <script src="<?php echo G5_JS_URL ?>/jquery.register_form.js"></script>
     <?php if($config['cf_cert_use'] && ($config['cf_cert_ipin'] || $config['cf_cert_hp'])) { ?>
-    <script src="<?php echo G5_JS_URL ?>/certify.js"></script>
+    <script src="<?php echo G5_JS_URL ?>/certify.js?v=<?php echo G5_JS_VER; ?>"></script>
     <?php } ?>
 
     <form id="fregisterform" name="fregisterform" action="<?php echo $register_action_url ?>" onsubmit="return fregisterform_submit(this);" method="post" enctype="multipart/form-data" autocomplete="off">
diff --git a/theme/basic/mobile/skin/member/basic/register_form.skin.php b/theme/basic/mobile/skin/member/basic/register_form.skin.php
index 941399c9f..db17e0fa2 100644
--- a/theme/basic/mobile/skin/member/basic/register_form.skin.php
+++ b/theme/basic/mobile/skin/member/basic/register_form.skin.php
@@ -8,7 +8,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
 <div class="mbskin">
     <script src="<?php echo G5_JS_URL ?>/jquery.register_form.js"></script>
     <?php if($config['cf_cert_use'] && ($config['cf_cert_ipin'] || $config['cf_cert_hp'])) { ?>
-    <script src="<?php echo G5_JS_URL ?>/certify.js"></script>
+    <script src="<?php echo G5_JS_URL ?>/certify.js?v=<?php echo G5_JS_VER; ?>"></script>
     <?php } ?>
 
     <form name="fregisterform" id="fregisterform" action="<?php echo $register_action_url ?>" onsubmit="return fregisterform_submit(this);" method="post" enctype="multipart/form-data" autocomplete="off">
@@ -122,7 +122,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
         </tr>
         <?php } ?>
 
-        <?php if ($config['cf_use_hp']) {  ?>
+        <?php if ($config['cf_use_hp'] || $config['cf_cert_hp']) {  ?>
         <tr>
             <th scope="row"><label for="reg_mb_hp">휴대폰번호<?php if ($config['cf_req_hp']) { ?><strong class="sound_only">필수</strong><?php } ?></label></th>
             <td>
diff --git a/theme/basic/skin/member/basic/register_form.skin.php b/theme/basic/skin/member/basic/register_form.skin.php
index 3f2076758..436bee0e9 100644
--- a/theme/basic/skin/member/basic/register_form.skin.php
+++ b/theme/basic/skin/member/basic/register_form.skin.php
@@ -10,7 +10,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
 
     <script src="<?php echo G5_JS_URL ?>/jquery.register_form.js"></script>
     <?php if($config['cf_cert_use'] && ($config['cf_cert_ipin'] || $config['cf_cert_hp'])) { ?>
-    <script src="<?php echo G5_JS_URL ?>/certify.js"></script>
+    <script src="<?php echo G5_JS_URL ?>/certify.js?v=<?php echo G5_JS_VER; ?>"></script>
     <?php } ?>
 
     <form id="fregisterform" name="fregisterform" action="<?php echo $register_action_url ?>" onsubmit="return fregisterform_submit(this);" method="post" enctype="multipart/form-data" autocomplete="off">