diff --git a/app/assets/stylesheets/mobile.css.erb b/app/assets/stylesheets/mobile.css.erb
index 3347d614..324acdec 100644
--- a/app/assets/stylesheets/mobile.css.erb
+++ b/app/assets/stylesheets/mobile.css.erb
@@ -3,7 +3,7 @@
 }
 
 /* Smartphones (portrait and landscape) ----------- */
-@media only screen and (min-device-width : 320px) and (max-device-width : 480px) {
+@media only screen and (max-device-width : 480px) {
   .upperLeftUI, .upperRightUI, .openCheatsheet, .mapInfoIcon, .uv-icon, .chat-box, #exploreMapsHeader {
     display: none !important;
   }
@@ -76,7 +76,7 @@
 }
 
 /* Smartphones (portrait) ----------- */
-@media only screen and (max-width : 320px) {
+@media only screen and (max-width : 400px) {
 
   .map {
     width: 100%;