diff --git a/frontend/components/cart/global/CartSummary.vue b/frontend/components/cart/global/CartSummary.vue
index 46e3968..8ed8a79 100644
--- a/frontend/components/cart/global/CartSummary.vue
+++ b/frontend/components/cart/global/CartSummary.vue
@@ -1,6 +1,7 @@
 <script setup lang="ts">
 // imports
 
+import useDeleteDiscountCode from "~/composables/api/orders/useDeleteDiscountCode";
 import useGetCartOrders from "~/composables/api/orders/useGetCartOrders";
 import useSubmitDiscountCode from "~/composables/api/orders/useSubmitDiscountCode";
 import { useToast } from "~/composables/global/useToast";
@@ -10,25 +11,31 @@ import { QUERY_KEYS } from "~/constants";
 
 const route = useRoute();
 const { $queryClient: queryClient } = useNuxtApp();
-
-const discountCode = ref("");
+const { addToast } = useToast();
 
 // queries
 
 const { data: cart, isLoading: cartIsLoading } = useGetCartOrders();
 
-const { addToast } = useToast();
+const discountCode = ref(cart.value?.discount_code?.code || "");
 
 const {
     mutateAsync: submitDiscountCode,
     isPending: submitDiscountCodeIsPending,
 } = useSubmitDiscountCode();
 
+const {
+    mutateAsync: deleteDiscountCode,
+    isPending: deleteDiscountCodeIsPending,
+} = useDeleteDiscountCode();
+
 // computed
 
 const nextPage: ComputedRef<{ name: string; label: string } | undefined> =
     computed(() => route.meta.nextPage);
 
+const hasSubmittedDiscountCode = computed(() => !!cart.value?.discount_code);
+
 // methods
 
 const handleSubmitDiscountCode = () => {
@@ -50,6 +57,24 @@ const handleSubmitDiscountCode = () => {
         }
     );
 };
+
+const handleDeleteDiscountCode = () => {
+    deleteDiscountCode(undefined, {
+        onSuccess: () => {
+            queryClient.invalidateQueries({ queryKey: [QUERY_KEYS.cart] });
+            discountCode.value = "";
+        },
+        onError: () => {
+            addToast({
+                message: "خطایی در حذف کد تخفیف رخ داد",
+                options: {
+                    status: "error",
+                },
+            });
+            discountCode.value = "";
+        },
+    });
+};
 </script>
 
 <template>
@@ -94,7 +119,7 @@ const handleSubmitDiscountCode = () => {
             </div>
 
             <div
-                v-if="!!cart?.discount_code"
+                v-if="hasSubmittedDiscountCode"
                 class="flex items-center justify-between w-full text-status-error-primary text-red-700"
             >
                 <span class="max-w-1/2 text-sm"> تخفیف: </span>
@@ -119,19 +144,33 @@ const handleSubmitDiscountCode = () => {
                     v-model="discountCode"
                     placeholder="کد تخفیف"
                     class="!py-3 !pe-2 ps-2.5 w-full !rounded-none !border-e-[0px] !rounded-s-100"
+                    :disabled="hasSubmittedDiscountCode"
                 />
                 <button
-                    @click="handleSubmitDiscountCode"
+                    @click="
+                        hasSubmittedDiscountCode
+                            ? handleDeleteDiscountCode()
+                            : handleSubmitDiscountCode()
+                    "
                     class="text-xs px-5 rounded-e-100 py-1.5 text-white bg-black hover:invert border-[1.5px] border-black hover:border-white transition-all disabled:cursor-not-allowed"
-                    :disabled="!discountCode.length"
+                    :disabled="
+                        !discountCode.length ||
+                        submitDiscountCodeIsPending ||
+                        deleteDiscountCodeIsPending
+                    "
                 >
                     <Icon
-                        v-if="submitDiscountCodeIsPending"
+                        v-if="
+                            submitDiscountCodeIsPending ||
+                            deleteDiscountCodeIsPending
+                        "
                         name="svg-spinners:180-ring-with-bg"
                         size="20"
                         class="**:fill-white"
                     />
-                    <span v-else> ثبت </span>
+                    <span v-else>
+                        {{ hasSubmittedDiscountCode ? "حذف" : "ثبت" }}
+                    </span>
                 </button>
             </div>
 
diff --git a/frontend/components/cart/index/CartItem.vue b/frontend/components/cart/index/CartItem.vue
index aa62337..4c84b9f 100644
--- a/frontend/components/cart/index/CartItem.vue
+++ b/frontend/components/cart/index/CartItem.vue
@@ -140,11 +140,11 @@ watch(
                         {{ data.product.category }}
                     </span>
                     <div
-                        v-if="data.product.discount > 0"
+                        v-if="data.discount > 0"
                         class="text-white bg-blue-500 px-3 lg:px-4 py-1.5 lg:py-2 text-[10px] lg:text-xs rounded-full flex items-center gap-1"
                     >
                         <Icon name="bi:percent" class="size-4" />
-                        {{ data.product.discount }}
+                        {{ data.discount }}
                         تخفیف
                     </div>
                 </div>
@@ -227,15 +227,15 @@ watch(
                     <div class="flex items-end gap-2">
                         <div class="flex flex-col">
                             <span
-                                v-if="data.product.discount > 0"
+                                v-if="data.discount > 0"
                                 class="typo-p-sm relative flex-center w-fit line-through"
                             >
-                                {{ data.product.price }}
+                                {{ data.price }}
                             </span>
                             <span
                                 class="typo-p-xl relative flex-center w-fit font-medium"
                             >
-                                {{ data.product.final_price }}
+                                {{ data.final_price }}
                             </span>
                         </div>
                     </div>
@@ -279,11 +279,17 @@ watch(
                 </button>
             </div>
 
-            <span
-                class="text-sm lg:text-[1.125rem] text-slate-900 font-semibold"
-            >
-                {{ data.product.price }}
-            </span>
+            <div class="flex flex-col">
+                <span
+                    v-if="data.discount > 0"
+                    class="typo-p-xs relative flex-center w-fit line-through"
+                >
+                    {{ data.price }}
+                </span>
+                <span class="typo-p-md relative flex-center w-fit font-medium">
+                    {{ data.final_price }}
+                </span>
+            </div>
         </div>
     </li>
 </template>
diff --git a/frontend/components/global/Input.vue b/frontend/components/global/Input.vue
index ebee80b..c766fc7 100644
--- a/frontend/components/global/Input.vue
+++ b/frontend/components/global/Input.vue
@@ -15,7 +15,7 @@ const props = withDefaults(defineProps<Props>(), {
     disabled: false,
     placeholder: "وارد نشده",
 });
-const { variant, error, modelValue } = toRefs(props);
+const { variant, error, modelValue, disabled } = toRefs(props);
 
 // emits
 
@@ -38,6 +38,7 @@ const classes = computed(() => {
         {
             "input-solid": variant.value === "solid",
             "input-outlined": variant.value === "outlined",
+            "pointer-events-none opacity-80 text-slate-500": disabled.value,
             "input-effects": !error.value,
             [variant.value === "solid"
                 ? "input-solid-error"
diff --git a/frontend/composables/api/orders/useDeleteDiscountCode.ts b/frontend/composables/api/orders/useDeleteDiscountCode.ts
new file mode 100644
index 0000000..7bf07b3
--- /dev/null
+++ b/frontend/composables/api/orders/useDeleteDiscountCode.ts
@@ -0,0 +1,25 @@
+// imports
+
+import { useMutation } from "@tanstack/vue-query";
+import { API_ENDPOINTS } from "~/constants";
+
+const useDeleteDiscountCode = () => {
+    // state
+
+    const { $axios: axios } = useNuxtApp();
+
+    // methods
+
+    const handleDeleteDiscountCode = async () => {
+        const { data } = await axios.delete(
+            API_ENDPOINTS.orders.cart.delete_discount
+        );
+        return data;
+    };
+
+    return useMutation({
+        mutationFn: () => handleDeleteDiscountCode(),
+    });
+};
+
+export default useDeleteDiscountCode;
diff --git a/frontend/composables/global/usePwa.ts b/frontend/composables/global/usePwa.ts
new file mode 100644
index 0000000..7b8fd55
--- /dev/null
+++ b/frontend/composables/global/usePwa.ts
@@ -0,0 +1,19 @@
+export const usePWA = () => {
+    const isInstalledAsPWA = ref(false);
+
+    const checkPWAInstallation = () => {
+        const isStandalone = window.matchMedia(
+            "(display-mode: standalone)"
+        ).matches;
+        const isIOSPWA = (window.navigator as any).standalone;
+        isInstalledAsPWA.value = isStandalone || isIOSPWA;
+    };
+
+    onMounted(() => {
+        checkPWAInstallation();
+    });
+
+    return {
+        isInstalledAsPWA,
+    };
+};
diff --git a/frontend/constants/index.ts b/frontend/constants/index.ts
index 178d14b..25b2ed4 100644
--- a/frontend/constants/index.ts
+++ b/frontend/constants/index.ts
@@ -50,6 +50,7 @@ export const API_ENDPOINTS = {
             delete_all: "/order/cart/all",
             add_one: "/order/cart/item",
             add_discount: "/order/cart/discount",
+            delete_discount: "/order/cart/discount",
         },
     },
 };
diff --git a/frontend/plugins/pwaUpdate.client.ts b/frontend/plugins/pwaUpdate.client.ts
index 4129f69..ac9ce3c 100644
--- a/frontend/plugins/pwaUpdate.client.ts
+++ b/frontend/plugins/pwaUpdate.client.ts
@@ -1,50 +1,39 @@
 import { Workbox } from "workbox-window";
+import { usePWA } from "~/composables/global/usePwa";
 
 export default defineNuxtPlugin(() => {
     const updateAvailable = ref(false);
     let wb: Workbox | null = null;
 
-    if ("serviceWorker" in navigator) {
+    const { isInstalledAsPWA } = usePWA();
+
+    if ("serviceWorker" in navigator && isInstalledAsPWA.value) {
         wb = new Workbox("/sw.js");
 
-        const isStandalone = window.matchMedia(
-            "(display-mode: standalone)"
-        ).matches;
-        const isIOSPWA = (window.navigator as any).standalone;
-        const isInstalledAsPWA = isStandalone || isIOSPWA;
-
-        // Listen for messages from the service worker
-        navigator.serviceWorker.addEventListener("message", (event) => {
-            if (
-                event.data &&
-                event.data.type === "VERSION_CHECK" 
-            ) {
-                checkForUpdate(event.data.version);
-            }
+        wb.addEventListener("waiting", () => {
+            checkForUpdate();
         });
 
-        // Register the service worker and check if there's already a waiting one
-        wb.register().then((registration: any) => {
-            if (registration.waiting) {
-                checkForUpdate();
-            }
-        });
+        wb.register()
+            .then((registration: any) => {
+                if (registration.waiting) {
+                    checkForUpdate();
+                }
+            })
+            .catch((error) => {
+                console.error("Service worker registration failed:", error);
+            });
     }
 
-    // 🔹 Function to compare versions and show update modal if needed
-    const checkForUpdate = (newVersion?: string) => {
-        const currentVersion = localStorage.getItem("pwa_version");
-
-        if (newVersion && currentVersion !== newVersion) {
-            updateAvailable.value = true;
-            localStorage.setItem("pwa_version", newVersion);
-        }
+    const checkForUpdate = () => {
+        updateAvailable.value = true;
     };
-
-    // 🔹 Function to apply the update
     const handleUpdate = () => {
-        wb?.messageSW({ type: "SKIP_WAITING" });
-        window.location.reload();
+        if (wb) {
+            wb.messageSW({ type: "SKIP_WAITING" }).then(() => {
+                window.location.reload();
+            });
+        }
     };
 
     return {
diff --git a/frontend/types/global.d.ts b/frontend/types/global.d.ts
index 637c56c..6362e85 100644
--- a/frontend/types/global.d.ts
+++ b/frontend/types/global.d.ts
@@ -71,7 +71,7 @@ declare global {
         discount: number;
         color: string;
         video: string | null;
-        cart_quantity : number;
+        cart_quantity: number;
     };
 
     type Product = {
@@ -215,6 +215,10 @@ declare global {
             discount_amount: string;
             final_price: string;
         };
+        discount: number;
+        discount_amount: string;
+        price: string;
+        final_price: string;
         quantity: number;
     };