diff --git a/addons/web/static/src/js/views/pivot/pivot_controller.js b/addons/web/static/src/js/views/pivot/pivot_controller.js
index 47eb5ad49fe..733a812d328 100644
--- a/addons/web/static/src/js/views/pivot/pivot_controller.js
+++ b/addons/web/static/src/js/views/pivot/pivot_controller.js
@@ -13,7 +13,6 @@ odoo.define('web.PivotController', function (require) {
  */
 
 var AbstractController = require('web.AbstractController');
-var config = require('web.config');
 var core = require('web.core');
 var framework = require('web.framework');
 var session = require('web.session');
@@ -115,16 +114,6 @@ var PivotController = AbstractController.extend({
             this._updateButtons();
         }
     },
-    /**
-     * @override
-     * @param {Object} params
-    */
-    update: function (params) {
-        if (config.device.isMobile && params.context) {
-            params.context.pivot_column_groupby = [];
-        }
-        return this._super.apply(this, arguments);
-    },
 
     //--------------------------------------------------------------------------
     // Private
@@ -218,12 +207,7 @@ var PivotController = AbstractController.extend({
                          .toggleClass('selected', isSelected);
         });
         var noDataDisplayed = !state.hasData || !state.measures.length;
-        var $flipButton = this.$buttons.find('.o_pivot_flip_button');
-        if (config.device.isMobile) {
-            $flipButton.toggleClass('o_hidden', true);
-        } else {
-            $flipButton.prop('disabled', noDataDisplayed);
-        }
+        this.$buttons.find('.o_pivot_flip_button').prop('disabled', noDataDisplayed);
         this.$buttons.find('.o_pivot_expand_button').prop('disabled', noDataDisplayed);
         this.$buttons.find('.o_pivot_download').prop('disabled', noDataDisplayed);
     },
diff --git a/addons/web/static/src/js/views/pivot/pivot_renderer.js b/addons/web/static/src/js/views/pivot/pivot_renderer.js
index b74b408c877..3affc975225 100644
--- a/addons/web/static/src/js/views/pivot/pivot_renderer.js
+++ b/addons/web/static/src/js/views/pivot/pivot_renderer.js
@@ -125,10 +125,7 @@ var PivotRenderer = AbstractRenderer.extend({
                     if (rowIndex > 0) {
                         cellParams.title = groupbyLabels[rowIndex - 1];
                     }
-                    className = 'o_pivot_header_cell';
-                    if (!config.device.isMobile) {
-                        className += cell.isLeaf ? '_closed' : '_opened';
-                    }
+                    className = 'o_pivot_header_cell' + (cell.isLeaf ? '_closed' : '_opened');
                 }
                 cellParams.class = className;
             
diff --git a/addons/web/static/src/js/views/pivot/pivot_view.js b/addons/web/static/src/js/views/pivot/pivot_view.js
index 78e7c68cbe6..1b878cf3530 100644
--- a/addons/web/static/src/js/views/pivot/pivot_view.js
+++ b/addons/web/static/src/js/views/pivot/pivot_view.js
@@ -108,7 +108,6 @@ var PivotView = AbstractView.extend({
         this.loadParams.default_order = params.default_order || this.arch.attrs.default_order;
         if (config.device.isMobile) {
             this.loadParams.colGroupBys = [];
-            this.loadParams.context.pivot_column_groupby = [];
         }