diff --git a/Projects/App/Sources/MainTabSplit/Pokit/PokitSplitFeature.swift b/Projects/App/Sources/MainTabSplit/Pokit/PokitSplitFeature.swift
index 47cbc2be..8daae15e 100644
--- a/Projects/App/Sources/MainTabSplit/Pokit/PokitSplitFeature.swift
+++ b/Projects/App/Sources/MainTabSplit/Pokit/PokitSplitFeature.swift
@@ -26,7 +26,7 @@ public struct PokitSplitFeature {
     /// - State
     @ObservableState
     public struct State: Equatable {
-        var columnVisibility: NavigationSplitViewVisibility = UIDevice.current.orientation == .portrait ? .detailOnly : .all
+        var columnVisibility: NavigationSplitViewVisibility = Device.isPortrait ? .doubleColumn : .all
         
         var 포킷: PokitRootFeature.State = .init()
         var 카테고리상세: CategoryDetailFeature.State?
@@ -205,6 +205,9 @@ private extension PokitSplitFeature {
         switch action {
         case let .포킷(.delegate(.categoryTapped(category))):
             state.categoryId = category.id
+            if Device.isPortrait {
+                state.columnVisibility = .detailOnly
+            }
             return .send(.inner(.카테고리_상세_활성화(category)))
         case .포킷(.delegate(.카테고리_삭제)):
             state.카테고리상세 = nil
@@ -216,7 +219,7 @@ private extension PokitSplitFeature {
             return .none
             
         case .링크추가및수정(.delegate(.dismiss)):
-            state.columnVisibility = .detailOnly
+            state.columnVisibility = .doubleColumn
             return .none
         case .링크추가및수정:
             return .none
diff --git a/Projects/App/Sources/Root/RootFeature.swift b/Projects/App/Sources/Root/RootFeature.swift
index bc00cbc4..51c7dedb 100644
--- a/Projects/App/Sources/Root/RootFeature.swift
+++ b/Projects/App/Sources/Root/RootFeature.swift
@@ -16,7 +16,6 @@ import Util
 public struct RootFeature {
     @Dependency(UserDefaultsClient.self) var userDefaults
     @Dependency(UserClient.self) var userClient
-    @Dependency(DeviceClient.self) var deviceClient
     @Reducer(state: .equatable)
     public enum Destination {
         
@@ -50,7 +49,7 @@ public struct RootFeature {
                 
                 guard let fcmToken = userDefaults.stringKey(.fcmToken) else {
                     await send(._sceneChange(
-                        deviceClient.isPhone()
+                        Device.isPhone
                         ? .mainTab()
                         : .mainTabSplit())
                     )
@@ -62,7 +61,7 @@ public struct RootFeature {
                 await userDefaults.setString(user.token, .fcmToken)
                 await userDefaults.setString("\(user.userId)", .userId)
                 await send(._sceneChange(
-                    deviceClient.isPhone()
+                    Device.isPhone
                     ? .mainTab()
                     : .mainTabSplit()
                 ))
diff --git a/Projects/CoreKit/Sources/Data/Client/DeviceClient/DeviceClient+LiveKey.swift b/Projects/CoreKit/Sources/Data/Client/DeviceClient/DeviceClient+LiveKey.swift
deleted file mode 100644
index 1fc062f7..00000000
--- a/Projects/CoreKit/Sources/Data/Client/DeviceClient/DeviceClient+LiveKey.swift
+++ /dev/null
@@ -1,39 +0,0 @@
-//
-//  DeviceClient+LiveKey.swift
-//  CoreKit
-//
-//  Created by 김도형 on 10/25/24.
-//
-
-import SwiftUI
-
-import Dependencies
-
-extension DeviceClient: DependencyKey {
-    public static let liveValue: Self = {
-#if os(iOS)
-        let device = UIDevice.current.userInterfaceIdiom
-#endif
-        
-        return Self(
-            isPhone: {
-#if os(macOS)
-                return false
-#endif
-                return device == .phone
-            },
-            isPad: {
-#if os(macOS)
-                return false
-#endif
-                return device == .pad
-            },
-            isMac: {
-#if os(macOS)
-                return true
-#endif
-                return false
-            }
-        )
-    }()
-}
diff --git a/Projects/CoreKit/Sources/Data/Client/DeviceClient/DeviceClient.swift b/Projects/CoreKit/Sources/Data/Client/DeviceClient/DeviceClient.swift
deleted file mode 100644
index f508ebc4..00000000
--- a/Projects/CoreKit/Sources/Data/Client/DeviceClient/DeviceClient.swift
+++ /dev/null
@@ -1,16 +0,0 @@
-//
-//  DeviceClient.swift
-//  CoreKit
-//
-//  Created by 김도형 on 10/25/24.
-//
-
-import Foundation
-import DependenciesMacros
-
-@DependencyClient
-public struct DeviceClient: Sendable {
-    public var isPhone: @Sendable () -> Bool = { false }
-    public var isPad: @Sendable () -> Bool = { false }
-    public var isMac: @Sendable () -> Bool = { false }
-}
diff --git a/Projects/Feature/FeatureContentSetting/Sources/ContentSetting/ContentSettingFeature.swift b/Projects/Feature/FeatureContentSetting/Sources/ContentSetting/ContentSettingFeature.swift
index 617c4ae8..d12acf65 100644
--- a/Projects/Feature/FeatureContentSetting/Sources/ContentSetting/ContentSettingFeature.swift
+++ b/Projects/Feature/FeatureContentSetting/Sources/ContentSetting/ContentSettingFeature.swift
@@ -26,8 +26,6 @@ public struct ContentSettingFeature {
     private var contentClient
     @Dependency(CategoryClient.self)
     private var categoryClient
-    @Dependency(DeviceClient.self)
-    private var deviceClient
     /// - State
     @ObservableState
     public struct State: Equatable {
@@ -214,7 +212,7 @@ private extension ContentSettingFeature {
             
             return .send(.delegate(.포킷추가하기))
         case .뒤로가기_버튼_눌렀을때:
-            guard deviceClient.isPhone() else {
+            guard Device.isPhone else {
                 return .send(.delegate(.dismiss))
             }
             return state.isShareExtension
@@ -318,7 +316,7 @@ private extension ContentSettingFeature {
             }
             return .none
         case .선택한_포킷_인메모리_삭제:
-            guard deviceClient.isPhone() else { return .none }
+            guard Device.isPhone else { return .none }
             state.selectedPokit = nil
             return .none
         }
diff --git a/Projects/Util/Sources/Device.swift b/Projects/Util/Sources/Device.swift
new file mode 100644
index 00000000..714c3171
--- /dev/null
+++ b/Projects/Util/Sources/Device.swift
@@ -0,0 +1,43 @@
+//
+//  Device.swift
+//  Util
+//
+//  Created by 김도형 on 10/26/24.
+//
+
+import SwiftUI
+
+public struct Device {
+#if os(iOS)
+    static private let device = UIDevice.current.userInterfaceIdiom
+#endif
+    
+    public static var isPhone: Bool {
+#if os(macOS)
+        return false
+#endif
+        return device == .phone
+    }
+    
+    public static var isPad: Bool {
+#if os(macOS)
+        return false
+#endif
+        return device == .pad
+    }
+    
+    public static var isMac: Bool {
+#if os(macOS)
+        return true
+#endif
+        return device == .mac
+    }
+    
+    public static var isPortrait: Bool {
+#if os(macOS)
+        return false
+#endif
+        return UIDevice.current.orientation == .portrait
+        || UIDevice.current.orientation == .portraitUpsideDown
+    }
+}