try different fix for #415

code/smartphone.js

@@ -83,4 +83,8 @@ window.runOnSmartphonesAfterBoot = function() {
   $('#portaldetails').off('click', '**');
 
   $('.leaflet-right').addClass('leaflet-left').removeClass('leaflet-right');
+
+  // make buttons in action bar flexible
+  var l = $('#chatcontrols a:visible');
+  l.css('width', 100/l.length + '%');
 }

mobile/smartphone.css

@@ -16,11 +16,6 @@ body {
 #chatcontrols {
   height: 38px;
   width: 100%;
-  display: flexbox;
-  display: -webkit-box;
-  display: -webkit-flexbox;
-  display: -moz-flexbox;
-  display: -moz-box;
 }
 
 /* hide shrink button */
@@ -29,15 +24,15 @@ body {
 }
 
 #chatcontrols a {
+  width: 50px;
   height:36px;
   overflow: hidden;
   vertical-align: middle;
   line-height: 36px;
   text-decoration: none;
-  -webkit-box-flex: 1;
-  -moz-box-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
+  -moz-box-sizing: border-box;
+  -webkit-box-sizing: border-box;
+  box-sizing: border-box;
 }
 
 #chat {