diff --git a/mopidy_musicbox_webclient/static/js/controls.js b/mopidy_musicbox_webclient/static/js/controls.js
index d3790683..5664585d 100644
--- a/mopidy_musicbox_webclient/static/js/controls.js
+++ b/mopidy_musicbox_webclient/static/js/controls.js
@@ -398,7 +398,7 @@
                 $('#popupShowInfo #uri-cell').val(uri)
                 showLoading(false)
                 $('#popupShowInfo').popup('open')
-                if (!isMobile()) {
+                if (!isMobile) {
                     // Set focus and select URI text on desktop systems (don't want the keyboard to pop up automatically on mobile devices)
                     $('#popupShowInfo #uri-cell').focus()
                     $('#popupShowInfo #uri-cell').select()
diff --git a/mopidy_musicbox_webclient/static/js/functionsvars.js b/mopidy_musicbox_webclient/static/js/functionsvars.js
index 4b0432d4..3f6a9cbb 100644
--- a/mopidy_musicbox_webclient/static/js/functionsvars.js
+++ b/mopidy_musicbox_webclient/static/js/functionsvars.js
@@ -44,6 +44,7 @@ var browseStack = []
 
 var ua = navigator.userAgent || navigator.vendor || window.opera
 var isMobileSafari = /Mac/.test(ua) && /Mobile/.test(ua)
+var isMobile = isMobile()
 
 // constants
 PROGRAM_NAME = $(document.body).data('program-name')
@@ -176,7 +177,7 @@ function isMobile () {
     var regexpMobile = /(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i
     var regexpTablet = /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i
     var uaString = ua.substr(0, 4)
-    return regexpMobile.test(uaString) || regexpTablet.test(uaString)
+    return isMobileSafari || regexpMobile.test(uaString) || regexpTablet.test(uaString)
 }
 
 // A hack to find the name of the first artist of a playlist. this is not yet returned by mopidy
diff --git a/mopidy_musicbox_webclient/static/mb.appcache b/mopidy_musicbox_webclient/static/mb.appcache
index fc16afbb..28ae5780 100644
--- a/mopidy_musicbox_webclient/static/mb.appcache
+++ b/mopidy_musicbox_webclient/static/mb.appcache
@@ -1,6 +1,6 @@
 CACHE MANIFEST
 
-# 2017-01-14:v1
+# 2017-01-14:v3
 
 NETWORK:
 *