diff --git a/src/api/services/familyService.ts b/src/api/services/familyService.ts
index 667dbe3..4a09375 100644
--- a/src/api/services/familyService.ts
+++ b/src/api/services/familyService.ts
@@ -8,6 +8,7 @@ interface Permission {
   permissionId: number;
   permissionTitle: string;
   createdAt: string;
+  is_enable: boolean;
 }
 
 interface MemberPermissionsResponse {
diff --git a/src/components/Header.tsx b/src/components/Header.tsx
index 9e300f1..79b89f7 100644
--- a/src/components/Header.tsx
+++ b/src/components/Header.tsx
@@ -118,18 +118,18 @@ export default function Header({
             className={`h-16 ${darkMode ? "invert" : ""}`}
           />
         ) : (
-          <h1 className="font-semibold text-[#333333] m-0 text-lg">
+          <h1 className="h-16 flex items-center font-semibold text-[#333333] m-0 text-lg">
             {getPageTitle()}
           </h1>
         )}
       </div>
 
-      <div className="flex items-center gap-3 w-20 justify-end">
+      <div className="flex items-center gap-2 w-20 justify-end">
         {showAlarmIcon && (
           <button
             type="button"
             aria-label="알림"
-            className={`relative cursor-pointer flex items-center justify-center w-12 h-12 rounded-full shrink-0 border-[3px] border-white ${darkMode ? "bg-white invert" : "bg-gradient-to-b from-white/0 to-white/100 to-42%"}`}
+            className={`relative cursor-pointer flex items-center justify-center w-11 h-11 rounded-full shrink-0 border-[3px] border-white ${darkMode ? "bg-white invert" : "bg-gradient-to-b from-white/0 to-white/100 to-42%"}`}
             onClick={() => navigate("/alarm")}
           >
             <img src={alarmIcon} alt="" className="w-6 h-6" />
@@ -146,7 +146,7 @@ export default function Header({
           <button
             type="button"
             aria-label="설정"
-            className={`cursor-pointer flex items-center justify-center w-12 h-12 rounded-full shrink-0 border-[3px] border-white ${darkMode ? "bg-white invert" : "bg-gradient-to-b from-white/0 to-white/100 to-42%"}`}
+            className={`cursor-pointer flex items-center justify-center w-11 h-11 rounded-full shrink-0 border-[3px] border-white ${darkMode ? "bg-white invert" : "bg-gradient-to-b from-white/0 to-white/100 to-42%"}`}
             onClick={() => navigate("/setting")}
           >
             <img src={settingIcon} alt="" className="w-6 h-6" />
diff --git a/src/page/Detail/DetailPage.tsx b/src/page/Detail/DetailPage.tsx
index 45f29e6..aae1db9 100644
--- a/src/page/Detail/DetailPage.tsx
+++ b/src/page/Detail/DetailPage.tsx
@@ -112,7 +112,8 @@ export default function Detail() {
       try {
         const { data } = await familyService.getMyPermissions();
         const hasPerm = data.memberPermissions.some(
-          (p) => p.permissionTitle === "앱 사용량 비공개 허용 권한",
+          (p) =>
+            p.permissionTitle === "앱 사용량 비공개 허용 권한" && p.is_enable,
         );
         setHasPrivacyPermission(hasPerm);
         if (!hasPerm) setGlobalIsPublic(true);
@@ -160,23 +161,13 @@ export default function Detail() {
         const parsed = parseAppUsageResponse(appRes, fallback);
 
         if (parsed) {
-          // 본인 + 권한 없으면 isPublic 강제 true
-          if (isOwnData && !hasPrivacyPermission) {
-            parsed.data.isPublic = true;
-          }
-          // 다른 사람 데이터: API의 isPublic 그대로 사용
-          // isPublic: false → 비공개 자물쇠 UI 표시
           setAppUsage(parsed.data);
-          if (isOwnData && !hasPrivacyPermission) {
-            setGlobalIsPublic(true);
-          } else if (parsed.updatedIsPublic != null) {
+          // API의 isPublic 값 그대로 반영 (본인/타인 모두 동일)
+          if (parsed.updatedIsPublic != null) {
             setGlobalIsPublic(parsed.updatedIsPublic);
-          } else if (loading) {
-            setGlobalIsPublic(true);
           }
         } else {
           setAppUsage(emptyAppUsage(fallback));
-          if (loading) setGlobalIsPublic(true);
         }
       } catch {
         setAppUsage(emptyAppUsage(globalIsPublic));
@@ -205,7 +196,7 @@ export default function Detail() {
       } catch {
         // polling 실패는 무시
       }
-    }, 1000);
+    }, 10000);
 
     return () => clearInterval(interval);
     // eslint-disable-next-line react-hooks/exhaustive-deps
@@ -381,7 +372,8 @@ export default function Detail() {
           isPublic={appUsage.isPublic}
           onPublicToggle={handleVisibilityToggle}
           disableToggle={!hasPrivacyPermission}
-          showToggle={isOwnData}
+          showToggle={isOwnData && hasPrivacyPermission}
+          isOwnData={isOwnData}
         />
       </motion.div>
     </motion.div>
diff --git a/src/page/Detail/components/AppUsageChart.tsx b/src/page/Detail/components/AppUsageChart.tsx
index 9fce1f5..772b035 100644
--- a/src/page/Detail/components/AppUsageChart.tsx
+++ b/src/page/Detail/components/AppUsageChart.tsx
@@ -15,6 +15,7 @@ interface AppUsageChartProps {
   onPublicToggle: (value: boolean) => void;
   disableToggle?: boolean;
   showToggle?: boolean;
+  isOwnData?: boolean;
 }
 
 const appNameMap: Record<string, string> = {
@@ -56,6 +57,7 @@ export default function AppUsageChart({
   onPublicToggle,
   disableToggle = false,
   showToggle = true,
+  isOwnData = false,
 }: AppUsageChartProps) {
   const [hoveredIndex, setHoveredIndex] = useState<number | null>(null);
   const [animated, setAnimated] = useState(false);
@@ -63,6 +65,8 @@ export default function AppUsageChart({
 
   // apps가 null이거나 undefined일 경우 빈 배열로 처리
   const safeApps = apps || [];
+  // 본인이면 isPublic=false여도 데이터 보여주기
+  const shouldShowData = isOwnData || isPublic;
 
   // 10개 초과 시 상위 10개 + 나머지를 "기타"로 묶기
   const MAX_DISPLAY = 7;
@@ -133,7 +137,7 @@ export default function AppUsageChart({
         </div>
 
         <div className="relative">
-          {!isPublic ? (
+          {!shouldShowData ? (
             <div className="flex flex-col items-center justify-center py-16">
               <svg
                 width="48"
diff --git a/src/page/Main/MainPage.tsx b/src/page/Main/MainPage.tsx
index 94820d2..48984a6 100644
--- a/src/page/Main/MainPage.tsx
+++ b/src/page/Main/MainPage.tsx
@@ -34,7 +34,7 @@ export default function Main() {
     useQuery<FamilyApiResponse>({
       queryKey: ["familyMembers"],
       queryFn: () => familyService.getMembers().then((res) => res.data),
-      refetchInterval: 1000,
+      refetchInterval: 10000,
       refetchIntervalInBackground: true,
       placeholderData: keepPreviousData, // ← v5 방식
     });
@@ -42,7 +42,7 @@ export default function Main() {
   const { data: usageData } = useQuery<UsageData>({
     queryKey: ["UsageData"],
     queryFn: () => sharedPoolService.getUsageData().then((res) => res.data),
-    refetchInterval: 1000, // 10초마다 자동 폴링
+    refetchInterval: 10000, // 10초마다 자동 폴링
     refetchIntervalInBackground: true, // 백그라운드에서도 폴링
     placeholderData: keepPreviousData,
   });
@@ -97,7 +97,7 @@ export default function Main() {
     useQuery<SharedData>({
       queryKey: ["sharedPool"],
       queryFn: () => sharedPoolService.getMainRemainingAmount(),
-      refetchInterval: 1000, // 10초마다 자동 폴링
+      refetchInterval: 10000, // 10초마다 자동 폴링
       refetchIntervalInBackground: true, // 백그라운드에서도 폴링
       placeholderData: keepPreviousData,
     });
@@ -109,7 +109,7 @@ export default function Main() {
     queryKey: ["blockStatus", lineId],
     queryFn: () => blockService.getBlockStatus(lineId!).then((res) => res.data),
     enabled: !!lineId,
-    refetchInterval: 1000, // 10초마다 자동 폴링
+    refetchInterval: 10000, // 10초마다 자동 폴링
     refetchIntervalInBackground: true, // 백그라운드에서도 폴링
     placeholderData: keepPreviousData,
   });
diff --git a/src/page/Policy/components/Permisssion.tsx b/src/page/Policy/components/Permisssion.tsx
index 88713e4..442817d 100644
--- a/src/page/Policy/components/Permisssion.tsx
+++ b/src/page/Policy/components/Permisssion.tsx
@@ -5,6 +5,7 @@ import Toggle from "@/components/common/Toggle";
 import { permissionService } from "@/api/services/permissionService";
 import type { PatchPermissionRequest } from "@/types/permission";
 import { useToastStore } from "@/store/toastStore";
+import { familyService } from "@/api";
 
 const PERMISSION_VIEW_DETAIL = "상세페이지 열람 권한";
 const PERMISSION_HIDE_APP_USAGE = "앱 사용량 비공개 허용 권한";
@@ -128,6 +129,17 @@ function PermissionManager() {
     patchPermissions(changedPayload);
   };
 
+  // 이미 캐시에 있는 데이터 가져오기
+  const { data: familyMembers = [] } = useQuery({
+    queryKey: ["familyMembersSimple"],
+    queryFn: () => familyService.getMembersSimple().then((res) => res.data),
+    staleTime: Infinity, // 이미 있으면 재요청 안함
+  });
+
+  // lineId로 phone 찾기
+  const getPhone = (lineId: number) =>
+    familyMembers.find((m) => m.lineId === lineId)?.phone;
+
   return (
     <>
       <GlassCard
@@ -178,7 +190,16 @@ function PermissionManager() {
             {rows.map((row, index) => (
               <div key={row.lineId}>
                 <div className="grid grid-cols-3 items-center py-3 px-2">
-                  <span className="text-sm text-gray-700">{row.userName}</span>
+                  <span className="text-sm text-gray-700">
+                    {row.userName}
+                    {/* 같은 이름이 여러 명이면 번호 표시 */}
+                    {rows.filter((r) => r.userName === row.userName).length >
+                      1 && (
+                      <span className="text-xs text-gray-400 ml-1">
+                        ({getPhone(row.lineId)?.slice(-4)})
+                      </span>
+                    )}
+                  </span>
                   <div className="flex justify-center">
                     <Toggle
                       checked={row.canViewDetail}
@@ -226,7 +247,15 @@ function PermissionManager() {
                     className="flex items-center justify-between text-sm text-gray-600 bg-gray-50 rounded-lg px-3 py-2"
                   >
                     <span>
-                      {row?.userName} · {permissionName}
+                      {row?.userName}
+                      {rows.filter((r) => r.userName === row?.userName).length >
+                        1 && (
+                        <span className="text-xs text-gray-400 ml-1">
+                          ({getPhone(row!.lineId)?.slice(-4)})
+                        </span>
+                      )}
+                      {" · "}
+                      {permissionName}
                     </span>
                     <span
                       className="font-semibold"