Open back arrow key in mac is actually a up and down arrow on iphone, so replacing for emoji back arrow

app/views/mobile/communities/topic.ejs

@@ -2,7 +2,7 @@
   <div class="pink-background" style="flex-grow: 0;">
     <h2>
       <a href="/communities/<%= community.name %>" style="color: #600; text-decoration: none;">
-        ⮃&nbsp; #<%= community.name %>
+        ⬅ #<%= community.name %>
       </a>
     </h2>
     <h1><%= topicTitle(posts[0].value) %></h1>

app/views/mobile/secrets/_compose_multiple.ejs

@@ -17,7 +17,7 @@
     </div>
     <div class="modal-group js-step" style="display: none">
       <div class="modal-footer">
-        <a href="javascript:;" class="js-modal-back" role="button">⮃&nbsp; Back</a>
+        <a href="javascript:;" class="js-modal-back" role="button">⬅ Back</a>
         <button class="modal-confirm js-secret-publish">Send</button>
         <div hidden class="js-sending-message"></div>
       </div>