diff --git a/app/ui.js b/app/ui.js
index 9daa689d..a045bca6 100644
--- a/app/ui.js
+++ b/app/ui.js
@@ -8,7 +8,8 @@
 
 import * as Log from '../core/util/logging.js';
 import _, { l10n } from './localization.js';
-import { isTouchDevice, dragThreshold } from '../core/util/browser.js';
+import { isTouchDevice, isSafari, isIOS, isAndroid, dragThreshold }
+    from '../core/util/browser.js';
 import { setCapture, getPointerEvent } from '../core/util/events.js';
 import KeyTable from "../core/input/keysym.js";
 import keysyms from "../core/input/keysymdef.js";
@@ -31,7 +32,6 @@ const UI = {
     controlbarMouseDownClientY: 0,
     controlbarMouseDownOffsetY: 0,
 
-    isSafari: false,
     lastKeyboardinput: null,
     defaultKeyboardinputLen: 100,
 
@@ -56,10 +56,6 @@ const UI = {
     // Render default UI and initialize settings menu
     start(callback) {
 
-        // Setup global variables first
-        UI.isSafari = (navigator.userAgent.indexOf('Safari') !== -1 &&
-                       navigator.userAgent.indexOf('Chrome') === -1);
-
         UI.initSettings();
 
         // Translate the DOM
@@ -117,7 +113,7 @@ const UI = {
     initFullscreen() {
         // Only show the button if fullscreen is properly supported
         // * Safari doesn't support alphanumerical input while in fullscreen
-        if (!UI.isSafari &&
+        if (!isSafari() &&
             (document.documentElement.requestFullscreen ||
              document.documentElement.mozRequestFullScreen ||
              document.documentElement.webkitRequestFullscreen ||
@@ -1248,8 +1244,8 @@ const UI = {
             // Can't be clipping if viewport is scaled to fit
             UI.forceSetting('view_clip', false);
             UI.rfb.clipViewport  = false;
-        } else if (isTouchDevice) {
-            // Touch devices usually have shit scrollbars
+        } else if (isIOS() || isAndroid()) {
+            // iOS and Android usually have shit scrollbars
             UI.forceSetting('view_clip', true);
             UI.rfb.clipViewport = true;
         } else {
diff --git a/core/util/browser.js b/core/util/browser.js
index 32e101e5..026a31ab 100644
--- a/core/util/browser.js
+++ b/core/util/browser.js
@@ -53,6 +53,26 @@ export function isMac() {
     return navigator && !!(/mac/i).exec(navigator.platform);
 }
 
+export function isWindows() {
+    return navigator && !!(/win/i).exec(navigator.platform);
+}
+
+export function isIOS() {
+    return navigator &&
+           (!!(/ipad/i).exec(navigator.platform) ||
+            !!(/iphone/i).exec(navigator.platform) ||
+            !!(/ipod/i).exec(navigator.platform));
+}
+
+export function isAndroid() {
+    return navigator && !!(/android/i).exec(navigator.userAgent);
+}
+
+export function isSafari() {
+    return navigator && (navigator.userAgent.indexOf('Safari') !== -1 &&
+                         navigator.userAgent.indexOf('Chrome') === -1);
+}
+
 export function isIE() {
     return navigator && !!(/trident/i).exec(navigator.userAgent);
 }
@@ -65,14 +85,3 @@ export function isFirefox() {
     return navigator && !!(/firefox/i).exec(navigator.userAgent);
 }
 
-export function isWindows() {
-    return navigator && !!(/win/i).exec(navigator.platform);
-}
-
-export function isIOS() {
-    return navigator &&
-           (!!(/ipad/i).exec(navigator.platform) ||
-            !!(/iphone/i).exec(navigator.platform) ||
-            !!(/ipod/i).exec(navigator.platform));
-}
-