diff --git a/app/Services/DashboardStatsService.php b/app/Services/DashboardStatsService.php
index 27eb858..b830a97 100644
--- a/app/Services/DashboardStatsService.php
+++ b/app/Services/DashboardStatsService.php
@@ -166,6 +166,9 @@ class DashboardStatsService
         };
     }
 
+    /**
+     * Effective traffic: Safari on iOS ≤ 17.2 (includes 17.2.x patch builds; excludes 17.3+).
+     */
     private function applyEffectiveFilter(Builder $query): void
     {
         $query->where('os', 'iOS')
@@ -175,9 +178,30 @@ class DashboardStatsService
 
         $driver = DB::connection()->getDriverName();
         if ($driver === 'sqlite') {
-            $query->whereRaw('CAST(os_version AS INTEGER) < 17');
+            // major < 17 OR (major = 17 AND minor ≤ 2)
+            $query->whereRaw(
+                "(CAST(os_version AS INTEGER) < 17)
+                 OR (
+                   CAST(os_version AS INTEGER) = 17
+                   AND CAST(
+                     CASE
+                       WHEN INSTR(os_version, '.') > 0
+                       THEN SUBSTR(os_version, INSTR(os_version, '.') + 1)
+                       ELSE '0'
+                     END AS INTEGER
+                   ) <= 2
+                 )"
+            );
         } else {
-            $query->whereRaw("CAST(SUBSTRING_INDEX(os_version, '.', 1) AS UNSIGNED) < 17");
+            $query->whereRaw(
+                "(CAST(SUBSTRING_INDEX(os_version, '.', 1) AS UNSIGNED) < 17)
+                 OR (
+                   CAST(SUBSTRING_INDEX(os_version, '.', 1) AS UNSIGNED) = 17
+                   AND CAST(
+                     SUBSTRING_INDEX(SUBSTRING_INDEX(CONCAT(os_version, '.0'), '.', 2), '.', -1) AS UNSIGNED
+                   ) <= 2
+                 )"
+            );
         }
     }
 
diff --git a/app/Telegram/Handlers/DataCommand.php b/app/Telegram/Handlers/DataCommand.php
index c3c074e..5310f51 100644
--- a/app/Telegram/Handlers/DataCommand.php
+++ b/app/Telegram/Handlers/DataCommand.php
@@ -84,7 +84,7 @@ class DataCommand
             '活跃设备: '.$data['active_count'],
             '页面 PV: '.$data['effective_pv'].' / '.$data['pv'].' (有效/全部)',
             '页面 UV: '.$data['effective_uv'].' / '.$data['uv'].' (有效/全部)',
-            '有效口径: iOS<17 + Safari',
+            '有效口径: iOS≤17.2 + Safari',
             '',
             '按系统:',
         ];
diff --git a/resources/views/admin/dashboard/index.blade.php b/resources/views/admin/dashboard/index.blade.php
index 236595d..ed336b4 100644
--- a/resources/views/admin/dashboard/index.blade.php
+++ b/resources/views/admin/dashboard/index.blade.php
@@ -81,7 +81,7 @@
         </div>
       </div>
     </div>
-    <div class="layui-word-aux" style="margin-top:4px;">有效口径：iOS &lt; 17 且使用 Safari（左侧高亮 / 右侧为全部）</div>
+    <div class="layui-word-aux" style="margin-top:4px;">有效口径：iOS ≤ 17.2 且使用 Safari（左侧高亮 / 右侧为全部）</div>
 
     <div class="layui-row layui-col-space15" style="margin-top:12px;">
       <div class="layui-col-md6">
diff --git a/tests/Feature/PageVisitTest.php b/tests/Feature/PageVisitTest.php
index 6929e85..ede4d41 100644
--- a/tests/Feature/PageVisitTest.php
+++ b/tests/Feature/PageVisitTest.php
@@ -111,9 +111,9 @@ class PageVisitTest extends TestCase
             'channel_id' => self::CHANNEL,
             'client_uid' => 'u3',
             'os' => 'iOS',
-            'os_version' => '17.0',
+            'os_version' => '17.2.1',
             'browser' => 'Safari',
-            'browser_version' => '17.0',
+            'browser_version' => '17.2',
             'created_at' => now(),
         ]);
         PageVisit::query()->create([
@@ -125,17 +125,27 @@ class PageVisitTest extends TestCase
             'browser_version' => '119.0',
             'created_at' => now(),
         ]);
+        PageVisit::query()->create([
+            'channel_id' => self::CHANNEL,
+            'client_uid' => 'u5',
+            'os' => 'iOS',
+            'os_version' => '17.3',
+            'browser' => 'Safari',
+            'browser_version' => '17.3',
+            'created_at' => now(),
+        ]);
 
         $admin = Admin::query()->create(['username' => 'admin', 'password' => 'admin123']);
         $this->actingAs($admin, 'admin')
             ->getJson(route('admin.dashboard.data', ['range' => 'today']))
             ->assertOk()
-            ->assertJsonPath('data.pv', 5)
-            ->assertJsonPath('data.uv', 4)
-            ->assertJsonPath('data.effective_pv', 2)
-            ->assertJsonPath('data.effective_uv', 1)
+            ->assertJsonPath('data.pv', 6)
+            ->assertJsonPath('data.uv', 5)
+            // effective: two 16.6 Safari (u1) + one 17.2.1 Safari (u3); exclude Android/Chrome/17.3
+            ->assertJsonPath('data.effective_pv', 3)
+            ->assertJsonPath('data.effective_uv', 2)
             ->assertJsonPath('data.by_os.0.label', 'iOS')
-            ->assertJsonPath('data.by_os.0.pv', 4)
+            ->assertJsonPath('data.by_os.0.pv', 5)
             ->assertJsonPath('data.by_os.1.label', '其他')
             ->assertJsonPath('data.by_os.1.pv', 1)
             ->assertJsonStructure(['data' => ['by_os', 'by_ios_version', 'pv', 'uv', 'effective_pv', 'effective_uv']]);