diff --git a/apps/api/prisma/migrations/20260905020000_activity_reminder_channels/migration.sql b/apps/api/prisma/migrations/20260905020000_activity_reminder_channels/migration.sql
new file mode 100644
index 0000000..d151e7f
--- /dev/null
+++ b/apps/api/prisma/migrations/20260905020000_activity_reminder_channels/migration.sql
@@ -0,0 +1,3 @@
+-- AlterTable
+ALTER TABLE "Activity" ADD COLUMN IF NOT EXISTS "reminderNotifyApp" BOOLEAN NOT NULL DEFAULT true;
+ALTER TABLE "Activity" ADD COLUMN IF NOT EXISTS "reminderNotifySms" BOOLEAN NOT NULL DEFAULT false;
diff --git a/apps/api/prisma/schema.prisma b/apps/api/prisma/schema.prisma
index d5cf610..5b98711 100644
--- a/apps/api/prisma/schema.prisma
+++ b/apps/api/prisma/schema.prisma
@@ -368,6 +368,10 @@ model Activity {
   dueAt           DateTime?
   durationMinutes Int?
   reminderAt      DateTime?
+  /// اعلان داخل پنل هنگام رسیدن یادآور
+  reminderNotifyApp Boolean @default(true)
+  /// پیامک به موبایل مسئول هنگام رسیدن یادآور
+  reminderNotifySms Boolean @default(false)
   completedAt     DateTime?
   personId       String?
   person         Person?        @relation(fields: [personId], references: [id], onDelete: SetNull)
diff --git a/apps/api/src/activities/activities.service.ts b/apps/api/src/activities/activities.service.ts
index 9fe7481..d21aa5d 100644
--- a/apps/api/src/activities/activities.service.ts
+++ b/apps/api/src/activities/activities.service.ts
@@ -28,6 +28,8 @@ type ActivityRow = {
   dueAt: Date | null;
   durationMinutes: number | null;
   reminderAt: Date | null;
+  reminderNotifyApp: boolean;
+  reminderNotifySms: boolean;
   completedAt: Date | null;
   createdAt: Date;
   updatedAt: Date;
@@ -183,6 +185,8 @@ export class ActivitiesService {
         dueAt: dto.dueAt ? new Date(dto.dueAt) : null,
         durationMinutes: dto.durationMinutes ?? null,
         reminderAt: dto.reminderAt ? new Date(dto.reminderAt) : null,
+        reminderNotifyApp: dto.reminderNotifyApp ?? true,
+        reminderNotifySms: dto.reminderNotifySms ?? false,
         personId: emptyToNull(dto.personId ?? null),
         companyId: emptyToNull(dto.companyId ?? null),
         dealId: emptyToNull(dto.dealId ?? null),
@@ -225,6 +229,8 @@ export class ActivitiesService {
     if ('dueAt' in dto) data.dueAt = dto.dueAt ? new Date(dto.dueAt) : null;
     if ('durationMinutes' in dto) data.durationMinutes = dto.durationMinutes ?? null;
     if ('reminderAt' in dto) data.reminderAt = dto.reminderAt ? new Date(dto.reminderAt) : null;
+    if (dto.reminderNotifyApp !== undefined) data.reminderNotifyApp = dto.reminderNotifyApp;
+    if (dto.reminderNotifySms !== undefined) data.reminderNotifySms = dto.reminderNotifySms;
     if ('personId' in dto) data.personId = emptyToNull(dto.personId ?? null);
     if ('companyId' in dto) data.companyId = emptyToNull(dto.companyId ?? null);
     if ('dealId' in dto) data.dealId = emptyToNull(dto.dealId ?? null);
@@ -412,6 +418,8 @@ export class ActivitiesService {
       dueAt: row.dueAt?.toISOString() ?? null,
       durationMinutes: row.durationMinutes,
       reminderAt: row.reminderAt?.toISOString() ?? null,
+      reminderNotifyApp: row.reminderNotifyApp,
+      reminderNotifySms: row.reminderNotifySms,
       completedAt: row.completedAt?.toISOString() ?? null,
       person: row.person
         ? {
diff --git a/apps/api/src/activities/dto.ts b/apps/api/src/activities/dto.ts
index a6edd42..d62839f 100644
--- a/apps/api/src/activities/dto.ts
+++ b/apps/api/src/activities/dto.ts
@@ -1,5 +1,6 @@
 import { Type } from 'class-transformer';
 import {
+  IsBoolean,
   IsDateString,
   IsIn,
   IsInt,
@@ -98,6 +99,14 @@ export class CreateActivityDto {
   @IsDateString()
   reminderAt?: string | null;
 
+  @IsOptional()
+  @IsBoolean()
+  reminderNotifyApp?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  reminderNotifySms?: boolean;
+
   @IsOptional()
   @ValidateIf((_, v) => v !== '' && v != null)
   @IsString()
@@ -160,6 +169,14 @@ export class UpdateActivityDto {
   @IsDateString()
   reminderAt?: string | null;
 
+  @IsOptional()
+  @IsBoolean()
+  reminderNotifyApp?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  reminderNotifySms?: boolean;
+
   @IsOptional()
   @ValidateIf((_, v) => v !== '' && v != null)
   @IsString()
diff --git a/apps/api/src/notifications/notifications.module.ts b/apps/api/src/notifications/notifications.module.ts
index e311df4..bf6d7fb 100644
--- a/apps/api/src/notifications/notifications.module.ts
+++ b/apps/api/src/notifications/notifications.module.ts
@@ -1,10 +1,11 @@
 import { Module } from '@nestjs/common';
 import { NotificationsController } from './notifications.controller';
 import { NotificationsService } from './notifications.service';
+import { SmsService } from '../common/sms.service';
 
 @Module({
   controllers: [NotificationsController],
-  providers: [NotificationsService],
+  providers: [NotificationsService, SmsService],
   exports: [NotificationsService],
 })
 export class NotificationsModule {}
diff --git a/apps/api/src/notifications/notifications.service.ts b/apps/api/src/notifications/notifications.service.ts
index a496cf7..0b4d2a4 100644
--- a/apps/api/src/notifications/notifications.service.ts
+++ b/apps/api/src/notifications/notifications.service.ts
@@ -1,6 +1,7 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, Logger } from '@nestjs/common';
 import type { NotificationDto, NotificationsListDto } from '@mento/shared';
 import { PrismaService } from '../prisma/prisma.service';
+import { SmsService } from '../common/sms.service';
 
 export type CreateNotificationInput = {
   organizationId: string;
@@ -17,7 +18,12 @@ export type CreateNotificationInput = {
 
 @Injectable()
 export class NotificationsService {
-  constructor(private readonly prisma: PrismaService) {}
+  private readonly logger = new Logger(NotificationsService.name);
+
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly sms: SmsService,
+  ) {}
 
   async list(
     organizationId: string,
@@ -55,16 +61,16 @@ export class NotificationsService {
     userId: string,
     id: string,
   ): Promise<NotificationDto | null> {
-    const existing = await this.prisma.notification.findFirst({
+    const row = await this.prisma.notification.findFirst({
       where: { id, organizationId, userId },
     });
-    if (!existing) return null;
-    if (existing.readAt) return this.toDto(existing);
-    const row = await this.prisma.notification.update({
-      where: { id },
+    if (!row) return null;
+    if (row.readAt) return this.toDto(row);
+    const updated = await this.prisma.notification.update({
+      where: { id: row.id },
       data: { readAt: new Date() },
     });
-    return this.toDto(row);
+    return this.toDto(updated);
   }
 
   async markAllRead(organizationId: string, userId: string): Promise<number> {
@@ -136,6 +142,51 @@ export class NotificationsService {
       });
     }
 
+    const dueActivities = await this.prisma.activity.findMany({
+      where: {
+        organizationId,
+        assigneeId: userId,
+        status: 'open',
+        reminderAt: { lte: now },
+      },
+      select: {
+        id: true,
+        title: true,
+        reminderNotifyApp: true,
+        reminderNotifySms: true,
+        assignee: { select: { mobile: true, fullName: true } },
+      },
+      take: 20,
+    });
+
+    for (const activity of dueActivities) {
+      if (activity.reminderNotifyApp) {
+        await this.create({
+          organizationId,
+          userId,
+          type: 'activity_reminder',
+          title: 'یادآوری فعالیت',
+          body: activity.title,
+          link: `/activities/${activity.id}`,
+          entityType: 'activity',
+          entityId: activity.id,
+          dedupe: true,
+        });
+      }
+
+      if (activity.reminderNotifySms) {
+        await this.sendActivityReminderSms(
+          activity.assignee?.mobile,
+          activity.title,
+        );
+      }
+
+      await this.prisma.activity.update({
+        where: { id: activity.id },
+        data: { reminderAt: null },
+      });
+    }
+
     const dueNotes = await this.prisma.note.findMany({
       where: {
         organizationId,
@@ -158,7 +209,6 @@ export class NotificationsService {
         entityId: note.id,
         dedupe: true,
       });
-      // یادآور فقط یک‌بار شلیک می‌شود؛ تکرار بعد از خواندن نباید رخ دهد
       await this.prisma.note.update({
         where: { id: note.id },
         data: { reminderAt: null },
@@ -166,6 +216,25 @@ export class NotificationsService {
     }
   }
 
+  private async sendActivityReminderSms(
+    mobile: string | null | undefined,
+    title: string,
+  ) {
+    if (!mobile) {
+      this.logger.warn('Activity reminder SMS skipped: assignee has no mobile');
+      return;
+    }
+    if (!this.sms.isConfigured()) {
+      this.logger.warn('Activity reminder SMS skipped: SMS not configured');
+      return;
+    }
+    const text = `یادآوری منتو: ${title}`.slice(0, 160);
+    const result = await this.sms.sendSmsDetailed(mobile, text);
+    if (!result.ok) {
+      this.logger.warn(`Activity reminder SMS failed: ${result.reason ?? 'unknown'}`);
+    }
+  }
+
   /** Keep newest notification per type+entity; drop repeated sync spam. */
   private async collapseDuplicates(userId: string): Promise<void> {
     const rows = await this.prisma.notification.findMany({
diff --git a/apps/web/src/views/ActivityFormView.vue b/apps/web/src/views/ActivityFormView.vue
index ffa1e5d..f8b12c7 100644
--- a/apps/web/src/views/ActivityFormView.vue
+++ b/apps/web/src/views/ActivityFormView.vue
@@ -55,6 +55,8 @@ const assigneeId = ref('');
 const isDone = ref(false);
 const needsNote = ref(false);
 const reminderAt = ref('');
+const reminderNotifyApp = ref(true);
+const reminderNotifySms = ref(false);
 
 const typeOpen = ref(false);
 const assigneeOpen = ref(false);
@@ -136,6 +138,8 @@ function resetForm() {
   isDone.value = false;
   needsNote.value = false;
   reminderAt.value = '';
+  reminderNotifyApp.value = true;
+  reminderNotifySms.value = false;
   tab.value = 'main';
   error.value = '';
 }
@@ -177,6 +181,8 @@ async function load() {
       reminderAt.value = data.reminderAt
         ? formatLocalDateTimeInput(new Date(data.reminderAt))
         : '';
+      reminderNotifyApp.value = data.reminderNotifyApp ?? true;
+      reminderNotifySms.value = data.reminderNotifySms ?? false;
       personId.value = data.person?.id ?? '';
       dealId.value = data.deal?.id ?? '';
       assigneeId.value = data.assignee?.id ?? auth.user?.id ?? '';
@@ -218,6 +224,8 @@ function payload(): CreateActivityRequest {
     dueAt: due && !Number.isNaN(due.getTime()) ? due.toISOString() : null,
     durationMinutes: durationMinutes.value || null,
     reminderAt: reminder && !Number.isNaN(reminder.getTime()) ? reminder.toISOString() : null,
+    reminderNotifyApp: reminder ? reminderNotifyApp.value : false,
+    reminderNotifySms: reminder ? reminderNotifySms.value : false,
     personId: personId.value || null,
     companyId: selectedPerson.value?.company?.id ?? null,
     dealId: dealId.value || null,
@@ -232,6 +240,9 @@ function validate() {
   if (!assigneeId.value) return 'مسئول فعالیت را انتخاب کنید.';
   if (isNew.value && !personId.value) return 'شخص یا مشتری مرتبط را انتخاب کنید.';
   if (needsNote.value && !description.value.trim()) return 'توضیح این فعالیت را بنویسید.';
+  if (reminderAt.value && !reminderNotifyApp.value && !reminderNotifySms.value) {
+    return 'برای یادآوری، اعلان یا پیامک را انتخاب کنید.';
+  }
   return '';
 }
 
@@ -481,6 +492,29 @@ watch([id, isNew], () => void load(), { immediate: true });
               icon="bell"
               placeholder="یادآوری تنظیم نشده است"
             />
+            <div v-if="reminderAt" class="reminder-channels">
+              <p class="channel-title">چگونه یادآوری شود؟</p>
+              <label class="channel">
+                <input v-model="reminderNotifyApp" type="checkbox" />
+                <span>
+                  <strong>اعلان داخل پنل</strong>
+                  <small>در زنگوله اعلان‌های منتو نشان داده می‌شود</small>
+                </span>
+              </label>
+              <label class="channel">
+                <input v-model="reminderNotifySms" type="checkbox" />
+                <span>
+                  <strong>پیامک به مسئول</strong>
+                  <small>به شماره موبایل مسئول فعالیت ارسال می‌شود</small>
+                </span>
+              </label>
+              <p
+                v-if="reminderAt && !reminderNotifyApp && !reminderNotifySms"
+                class="channel-warn"
+              >
+                حداقل یکی از روش‌های یادآوری را انتخاب کنید.
+              </p>
+            </div>
           </div>
         </div>
 
@@ -914,6 +948,65 @@ watch([id, isNew], () => void load(), { immediate: true });
   padding-inline: 0.15rem;
 }
 
+.reminder-channels {
+  display: grid;
+  gap: 0.55rem;
+  margin-top: 0.75rem;
+  padding-top: 0.75rem;
+  border-top: 1px dashed #e2e8f0;
+}
+
+.channel-title {
+  margin: 0;
+  font-size: 0.88rem;
+  font-weight: 800;
+  color: #0f172a;
+}
+
+.channel {
+  display: flex;
+  align-items: flex-start;
+  gap: 0.55rem;
+  cursor: pointer;
+  padding: 0.55rem 0.65rem;
+  border-radius: 12px;
+  border: 1px solid #e2e8f0;
+  background: #f8fafc;
+}
+
+.channel:has(input:checked) {
+  border-color: #99f6e4;
+  background: #f0fdfa;
+}
+
+.channel input {
+  margin-top: 0.2rem;
+  accent-color: #0d9488;
+}
+
+.channel span {
+  display: grid;
+  gap: 0.15rem;
+  min-width: 0;
+}
+
+.channel strong {
+  font-size: 0.9rem;
+  color: #0f172a;
+}
+
+.channel small {
+  color: #64748b;
+  font-size: 0.78rem;
+  line-height: 1.45;
+}
+
+.channel-warn {
+  margin: 0;
+  color: #b45309;
+  font-size: 0.8rem;
+}
+
 .note-card {
   display: grid;
   gap: 0.45rem;
diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index 97e1fe3..4e913e0 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -489,6 +489,8 @@ export interface ActivityDto {
   dueAt: string | null;
   durationMinutes: number | null;
   reminderAt: string | null;
+  reminderNotifyApp: boolean;
+  reminderNotifySms: boolean;
   completedAt: string | null;
   person: PersonSummaryDto | null;
   company: CompanySummaryDto | null;
@@ -507,6 +509,8 @@ export interface CreateActivityRequest {
   dueAt?: string | null;
   durationMinutes?: number | null;
   reminderAt?: string | null;
+  reminderNotifyApp?: boolean;
+  reminderNotifySms?: boolean;
   personId?: string | null;
   companyId?: string | null;
   dealId?: string | null;
@@ -522,6 +526,8 @@ export interface UpdateActivityRequest {
   dueAt?: string | null;
   durationMinutes?: number | null;
   reminderAt?: string | null;
+  reminderNotifyApp?: boolean;
+  reminderNotifySms?: boolean;
   personId?: string | null;
   companyId?: string | null;
   dealId?: string | null;
@@ -741,6 +747,7 @@ export interface DealLineItemInput {
 export type NotificationType =
   | "activity_assigned"
   | "activity_overdue"
+  | "activity_reminder"
   | "deal_moved"
   | "note_reminder"
   | "ticket_assigned"