diff --git a/src/public/upload.html b/src/public/upload.html
index 99aa85d..2867866 100644
--- a/src/public/upload.html
+++ b/src/public/upload.html
@@ -20,7 +20,7 @@
         <div class="guest-fields" aria-label="업로드하시는 분 정보">
           <label>
             <span>연락처</span>
-            <input type="tel" name="guestPhone" autocomplete="tel" inputmode="tel" placeholder="010-xxxx-xxxx">
+            <input type="tel" name="guestPhone" autocomplete="tel" inputmode="tel" value="010-">
           </label>
         </div>