diff --git a/bbs/group.php b/bbs/group.php
index 716b27508..4ad83b98b 100644
--- a/bbs/group.php
+++ b/bbs/group.php
@@ -1,8 +1,13 @@
 <?
 include_once('./_common.php');
 include_once(G4_LIB_PATH.'/latest.lib.php');
+$g4['title'] = $group['gr_subject'];
+
+if (G4_IS_MOBILE) {
+    include_once(G4_MOBILE_PATH.'/group.php');
+    return;
+}
 
-$g4['title'] = $group[gr_subject];
 include_once('./_head.php');
 ?>
 
@@ -17,7 +22,7 @@ for ($i=0; $row=sql_fetch_array($result); $i++) {
 
     // 사용방법
     // latest(스킨, 게시판아이디, 출력라인, 글자수);
-    echo latest('basic', $row[bo_table], 5, 70);
+    echo latest('basic', $row['bo_table'], 5, 70);
 }
 ?>
 <!-- 메인화면 최신글 끝 -->
diff --git a/head.sub.php b/head.sub.php
index 6a919310f..988a6c6af 100644
--- a/head.sub.php
+++ b/head.sub.php
@@ -76,7 +76,7 @@ var g4_cookie_domain = "<?=G4_COOKIE_DOMAIN?>";
 <script src="<?=G4_JS_URL?>/wrest.js"></script>
 <? if(G4_IS_MOBILE) { ?>
 <script>
-    document.cookie = "device_width=" + screen.width;
+    set_cookie("device_width", screen.width, 6, g4_cookie_domain);
 </script>
 <? } ?>
 <? if (!defined('G4_IS_ADMIN')) { echo $config['cf_add_script']; } ?>
diff --git a/js/common.js b/js/common.js
index ba517b69d..7150b7a43 100644
--- a/js/common.js
+++ b/js/common.js
@@ -581,13 +581,13 @@ function font_default(id)
     if(isNaN(count))
         count = 0;
 
-    // font resize 카운트 초기화
-    set_cookie("ck_font_resize_count", 0, 1, g4_cookie_domain);
-
-    if(count > 0)
+    if(count > 0) {
         act = "decrease";
-    else
+    } else {
         act = "increase";
+        // 작게 후 기본 크기가 되지 않는 문제해결을 위해 추가
+        set_cookie("ck_font_resize_count", 0, 1, g4_cookie_domain);
+    }
 
     for(i=0; i<Math.abs(count); i++) {
         font_resize(id, act);
diff --git a/mobile/group.php b/mobile/group.php
new file mode 100644
index 000000000..a0cabaa4c
--- /dev/null
+++ b/mobile/group.php
@@ -0,0 +1,11 @@
+<?
+if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
+
+include_once(G4_MOBILE_PATH.'/_head.php');
+?>
+
+모바일용 게시판 그룹
+
+<?
+include_once(G4_MOBILE_PATH.'/_tail.php');
+?>
diff --git a/mobile/index.php b/mobile/index.php
index 4ff043e78..ad42f959d 100644
--- a/mobile/index.php
+++ b/mobile/index.php
@@ -1,4 +1,6 @@
 <?
+if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
+
 include_once(G4_MOBILE_PATH.'/_head.php');
 ?>