diff --git a/README.md b/README.md
index 3e8891e..f547746 100644
--- a/README.md
+++ b/README.md
@@ -51,12 +51,29 @@ A dedicated compact layout for portrait-orientation small screens. Designed for
 | Feature | Standard | Portrait |
 |---|---|---|
 | Layout | Two-column (order left, products right) | Single pane with bottom tabs |
+| Categories | Horizontal scrollable chips | Compact hierarchical select dropdown |
 | Product grid | `auto-fill minmax(115px)` | Fixed 2 columns |
 | Product images | Full aspect ratio | Capped at 90px height |
-| Numpad | Shown inline in left pane | Dedicated "Numpad" tab |
+| Numpad | Shown inline in left pane | Dedicated "Numpad" tab (shows only selected line) |
 | Actions (Pay/Send/Checker) | Inside left pane action pad | Always-visible bottom strip |
 | Navbar | Full labels | Compact with smaller padding |
 
+#### Category Dropdown
+
+In portrait mode, the category selector is transformed into a compact dropdown list. It lists all active POS categories formatted hierarchically with indentation, making it extremely easy to filter products on small touch screens.
+
+#### Selected Line Actions (Note & Delete)
+
+The Numpad tab contains actions for modifying the selected orderline:
+- **Note**: Triggers the standard customer note input dialog.
+- **Delete**: Instantly removes the selected line from the cart.
+
+#### Numpad Single Line Focus
+
+To prevent overlaps on 5.8-inch screens:
+- **Cart Tab**: Shows only the order lines (full height). The numpad is hidden.
+- **Numpad Tab**: Hides all non-selected lines and hides the order summary block, showing only the selected line and the numpad/actions. If no item is selected, a friendly guide card is displayed.
+
 #### Table Checker Button
 
 The **Checker** button is available in the bottom pay strip in portrait mode. It allows waiters or cashiers to quickly print a basic table checker receipt.
@@ -119,6 +136,9 @@ pos_ui_optimization/
 │   └── src/
 │       ├── app/
 │       │   ├── components/
+│       │   │   ├── category_selector/
+│       │   │   │   ├── category_selector_patch.js # Hierarchical dropdown list
+│       │   │   │   └── category_selector_patch.xml
 │       │   │   ├── navbar/
 │       │   │   │   ├── navbar_patch.js       # Display Mode toggle in burger menu
 │       │   │   │   └── navbar_patch.xml
diff --git a/__manifest__.py b/__manifest__.py
index 570e32d..40124fd 100644
--- a/__manifest__.py
+++ b/__manifest__.py
@@ -33,6 +33,9 @@ Features
             # Navbar display-mode toggle
             'pos_ui_optimization/static/src/app/components/navbar/navbar_patch.js',
             'pos_ui_optimization/static/src/app/components/navbar/navbar_patch.xml',
+            # Category selector patch
+            'pos_ui_optimization/static/src/app/components/category_selector/category_selector_patch.js',
+            'pos_ui_optimization/static/src/app/components/category_selector/category_selector_patch.xml',
             # ProductScreen portrait tab state + layout
             'pos_ui_optimization/static/src/app/screens/product_screen/portrait_mode_patch.js',
             'pos_ui_optimization/static/src/app/screens/product_screen/portrait_screen.xml',
diff --git a/static/src/app/components/category_selector/category_selector_patch.js b/static/src/app/components/category_selector/category_selector_patch.js
new file mode 100644
index 0000000..3220bf0
--- /dev/null
+++ b/static/src/app/components/category_selector/category_selector_patch.js
@@ -0,0 +1,37 @@
+/** @odoo-module **/
+
+import { CategorySelector } from "@point_of_sale/app/components/category_selector/category_selector";
+import { patch } from "@web/core/utils/patch";
+import { useService } from "@web/core/utils/hooks";
+
+patch(CategorySelector.prototype, {
+    setup() {
+        super.setup();
+        this.portraitMode = useService("portrait_mode");
+    },
+
+    get allCategoriesTree() {
+        const all = this.pos.models["pos.category"].getAll() || [];
+        const roots = all.filter(c => !c.parent_id).sort((a, b) => (a.sequence || 0) - (b.sequence || 0));
+        const result = [];
+        
+        const traverse = (category, depth) => {
+            if (!category.hasProductsToShow) return;
+            result.push({
+                id: category.id,
+                name: "\u00A0\u00A0".repeat(depth * 2) + (depth > 0 ? "• " : "") + category.name,
+            });
+            if (category.child_ids && category.child_ids.length) {
+                const children = [...category.child_ids].sort((a, b) => (a.sequence || 0) - (b.sequence || 0));
+                for (const child of children) {
+                    traverse(child, depth + 1);
+                }
+            }
+        };
+        
+        for (const root of roots) {
+            traverse(root, 0);
+        }
+        return result;
+    }
+});
diff --git a/static/src/app/components/category_selector/category_selector_patch.xml b/static/src/app/components/category_selector/category_selector_patch.xml
new file mode 100644
index 0000000..d11623d
--- /dev/null
+++ b/static/src/app/components/category_selector/category_selector_patch.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<templates id="template" xml:space="preserve">
+    <t t-inherit="point_of_sale.CategorySelector" t-inherit-mode="extension" owl="1">
+        <xpath expr="//div[hasclass('category-list')]" position="replace">
+            <div t-if="portraitMode.isPortrait" class="portrait-category-dropdown p-2 bg-view border-bottom w-100">
+                <select class="form-select form-select-lg w-100 bg-light border-0 rounded-3 text-dark fw-bold" 
+                        t-on-change="(ev) => this.pos.setSelectedCategory(ev.target.value ? parseInt(ev.target.value) : 0)">
+                    <option value="0" t-att-selected="!this.pos.selectedCategory">All Categories</option>
+                    <t t-foreach="allCategoriesTree" t-as="cat" t-key="cat.id">
+                        <option t-att-value="cat.id" t-att-selected="this.pos.selectedCategory?.id === cat.id">
+                            <t t-esc="cat.name"/>
+                        </option>
+                    </t>
+                </select>
+            </div>
+            <div t-else="" t-attf-class="product-list category-list d-grid gap-1 gap-lg-2 p-2">
+                <t t-foreach="this.getCategoriesAndSub()" t-as="category" t-key="category.id">
+                    <button t-on-click="() => this.pos.setSelectedCategory(category.id)"
+                        t-attf-class="o_colorlist_item_color_{{category.color or 'none'}}"
+                        t-att-class="{
+                            'border-0': category.isChildren and !this.isAncestorOrSelected(category), 
+                            'opacity-75 border-0': !category.isChildren and !category.isSelected,
+                            'justify-content-center': ui.isSmall
+                        }"
+                        class="category-button p-1 btn btn-light d-flex justify-content-around align-items-center rounded-3 gap-1">
+                        <div t-if="showCategoryImg(category)" class="overflow-hidden flex-shrink-0 ratio ratio-1x1" style="width:40%;">
+                            <img t-if="category.imgSrc and !ui.isSmall" t-att-src="category.imgSrc"
+                                class="category-img-thumb h-100 rounded-3 object-fit-cover pe-none"
+                                alt="Category"
+                            />
+                        </div>
+                        <div class="line-clamp-3" t-att-class="{'w-100': !showCategoryImg(category)}" t-att-style="{'width: 60%;': showCategoryImg(category)}">
+                            <span t-if="category.name" class="text-center" t-esc="category.name" />
+                        </div>
+                    </button>
+                </t>
+            </div>
+        </xpath>
+    </t>
+</templates>
diff --git a/static/src/app/screens/product_screen/portrait_mode_patch.js b/static/src/app/screens/product_screen/portrait_mode_patch.js
index 393aec3..853acc9 100644
--- a/static/src/app/screens/product_screen/portrait_mode_patch.js
+++ b/static/src/app/screens/product_screen/portrait_mode_patch.js
@@ -1,6 +1,7 @@
 /** @odoo-module **/
 
 import { ProductScreen } from "@point_of_sale/app/screens/product_screen/product_screen";
+import { NoteButton } from "@point_of_sale/app/screens/product_screen/control_buttons/orderline_note_button/orderline_note_button";
 import { patch } from "@web/core/utils/patch";
 import { useState } from "@odoo/owl";
 import { useService } from "@web/core/utils/hooks";
@@ -19,4 +20,16 @@ patch(ProductScreen.prototype, {
     switchPortraitTab(tab) {
         this.portraitState.tab = tab;
     },
+
+    onDeleteLine() {
+        const orderline = this.pos.getOrder().getSelectedOrderline();
+        if (orderline) {
+            this.pos.getOrder().removeOrderline(orderline);
+        }
+    }
 });
+
+ProductScreen.components = {
+    ...ProductScreen.components,
+    NoteButton,
+};
diff --git a/static/src/app/screens/product_screen/portrait_screen.xml b/static/src/app/screens/product_screen/portrait_screen.xml
index e39c989..8d1336d 100644
--- a/static/src/app/screens/product_screen/portrait_screen.xml
+++ b/static/src/app/screens/product_screen/portrait_screen.xml
@@ -16,10 +16,44 @@
         </xpath>
 
         <!--
-            2. Inject the portrait footer (pay strip + tab bar) at the bottom
+            2. Toggle visibility class on the pads container in portrait mode
+               when on the Numpad tab with no selected order line.
+        -->
+        <xpath expr="//div[hasclass('pads')]" position="attributes">
+            <attribute name="t-att-class">{'d-none': portraitMode.isPortrait and portraitTab === 'numpad' and (!currentOrder or currentOrder.isEmpty() or !pos.getOrder()?.uiState.selected_orderline_uuid)}</attribute>
+        </xpath>
+
+        <!--
+            3. Inject a friendly no-selection placeholder before the pads container
+               when on the Numpad tab but no item is selected.
+        -->
+        <xpath expr="//div[hasclass('pads')]" position="before">
+            <div t-if="portraitMode.isPortrait and portraitTab === 'numpad' and (!currentOrder or currentOrder.isEmpty() or !pos.getOrder()?.uiState.selected_orderline_uuid)" 
+                 class="portrait-no-selection d-flex flex-column align-items-center justify-content-center p-4 text-muted text-center flex-grow-1" 
+                 style="min-height: 45vh;">
+                <i class="fa fa-hand-pointer-o fa-3x mb-3 text-secondary"/>
+                <h5 class="fw-bold text-dark">No Item Selected</h5>
+                <p class="fs-6 text-muted px-4">Tap on any item in the <b>Cart</b> tab to select it, then return here to modify it.</p>
+            </div>
+        </xpath>
+
+        <!--
+            4. Inject portrait-specific actions (Note and Delete) above the Numpad.
+        -->
+        <xpath expr="//Numpad" position="before">
+            <div t-if="portraitMode.isPortrait and !currentOrder.isEmpty() and pos.getOrder()?.uiState.selected_orderline_uuid" 
+                 class="portrait-numpad-actions d-flex gap-2 mb-2 w-100">
+                <NoteButton label="'Note'" class="'btn btn-outline-primary flex-fill d-flex align-items-center justify-content-center gap-2 py-3 fs-5 fw-bold rounded-3'" />
+                <button class="btn btn-outline-danger flex-fill d-flex align-items-center justify-content-center gap-2 py-3 fs-5 fw-bold rounded-3" 
+                        t-on-click="onDeleteLine">
+                    <i class="fa fa-trash-o fa-lg"/>Delete
+                </button>
+            </div>
+        </xpath>
+
+        <!--
+            5. Inject the portrait footer (pay strip + tab bar) at the bottom
                of the product-screen div. Only rendered in portrait mode.
-               ActionpadWidget from pos_custom_access is NOT duplicated here —
-               we reuse the existing one inside .leftpane (already patched).
         -->
         <xpath expr="//div[hasclass('product-screen')]" position="inside">
             <div t-if="portraitMode.isPortrait" class="portrait-footer">
@@ -87,8 +121,6 @@
                     </button>
                 </div>
 
-
-
                 <!-- Bottom tab bar -->
                 <div class="portrait-tab-bar d-flex">
                     <button
diff --git a/static/src/scss/portrait.scss b/static/src/scss/portrait.scss
index d5d3283..d53f85e 100644
--- a/static/src/scss/portrait.scss
+++ b/static/src/scss/portrait.scss
@@ -145,8 +145,7 @@
         &.portrait-tab-cart {
             .leftpane {
                 display: flex !important;
-                // Show full left pane including numpad
-                .subpads { display: flex; }
+                .pads { display: none !important; }
             }
             .rightpane { display: none !important; }
         }
@@ -154,8 +153,42 @@
         &.portrait-tab-numpad {
             .leftpane {
                 display: flex !important;
-                // Compact order list, expand numpad area
-                .order-container { max-height: 35vh !important; }
+                
+                // Hide other orderlines
+                .orderline:not(.selected) {
+                    display: none !important;
+                }
+                
+                // Hide the summary box
+                .order-summary {
+                    display: none !important;
+                }
+
+                // Compact order container for a single line
+                .order-container {
+                    max-height: 80px !important;
+                    height: auto !important;
+                    flex: 0 0 auto !important;
+                    overflow: hidden !important;
+                    border-bottom: 1px solid #dee2e6;
+                }
+
+                // Expand subpads to take the space
+                .subpads {
+                    display: flex !important;
+                    flex-grow: 1;
+                    justify-content: flex-end;
+                }
+
+                // Custom action buttons above numpad
+                .portrait-numpad-actions {
+                    .btn {
+                        box-shadow: 0 2px 4px rgba(0,0,0,0.05);
+                        &:active {
+                            transform: scale(0.98);
+                        }
+                    }
+                }
             }
             .rightpane { display: none !important; }
         }
@@ -333,4 +366,40 @@
             font-size: 1.1rem !important;
         }
     }
+
+    /* ============================================================
+       CATEGORY DROPDOWN & PLACEHOLDER STYLING
+       ============================================================ */
+    .portrait-category-dropdown {
+        background-color: #fff;
+        select {
+            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
+            font-size: 1rem !important;
+            padding-top: 10px !important;
+            padding-bottom: 10px !important;
+            border: 1px solid #ced4da !important;
+            &:focus {
+                border-color: #6610f2 !important;
+                box-shadow: 0 0 0 0.25rem rgba(102, 16, 242, 0.25) !important;
+            }
+        }
+    }
+
+    .portrait-no-selection {
+        background-color: #f8f9fa;
+        border-radius: 12px;
+        margin: 15px;
+        border: 2px dashed #dee2e6;
+        i {
+            color: #adb5bd;
+        }
+        h5 {
+            margin-top: 10px;
+            font-size: 1.1rem;
+        }
+        p {
+            font-size: 0.88rem;
+            max-width: 250px;
+        }
+    }
 }