diff --git a/ChaRo-iOS/ChaRo-iOS/Resource/Info.plist b/ChaRo-iOS/ChaRo-iOS/Resource/Info.plist
index 76fbdc5a..47a3e9db 100644
--- a/ChaRo-iOS/ChaRo-iOS/Resource/Info.plist
+++ b/ChaRo-iOS/ChaRo-iOS/Resource/Info.plist
@@ -86,6 +86,7 @@
 	<array>
 		<string>fetch</string>
 		<string>remote-notification</string>
+		<string>voip</string>
 	</array>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
diff --git a/ChaRo-iOS/ChaRo-iOS/Source/Services/Contants.swift b/ChaRo-iOS/ChaRo-iOS/Source/Services/Contants.swift
index 41267643..ee5777e6 100644
--- a/ChaRo-iOS/ChaRo-iOS/Source/Services/Contants.swift
+++ b/ChaRo-iOS/ChaRo-iOS/Source/Services/Contants.swift
@@ -12,10 +12,10 @@ struct Constants {
     // MARK: - BASE URL
     static let baseURL = "http://52.79.108.141:5000"
     
-    static let userId = UserDefaults.standard.string(forKey: "userId") ?? "ios@gmail.com"
-    static let nickName = UserDefaults.standard.string(forKey: "nickname") ?? "지으니"
-    static let profileName = UserDefaults.standard.string(forKey: "profileImage") ?? "https://charo-image.s3.ap-northeast-2.amazonaws.com/dummy/jieun.JPG"
-    static let userEmail = UserDefaults.standard.string(forKey: "userEmail") ?? "ios@gmail.com"
+    static let userId = UserDefaults.standard.string(forKey: Constants.UserDefaultsKey.userEmail) ?? "ios@gmail.com"
+    static let nickName = UserDefaults.standard.string(forKey: Constants.UserDefaultsKey.userNickname) ?? "지으니"
+    static let profileName = UserDefaults.standard.string(forKey: Constants.UserDefaultsKey.userImage) ?? "https://charo-image.s3.ap-northeast-2.amazonaws.com/dummy/jieun.JPG"
+    static let userEmail = UserDefaults.standard.string(forKey: Constants.UserDefaultsKey.userEmail) ?? "ios@gmail.com"
 
     
     // MARK: - Feature URL
diff --git a/ChaRo-iOS/ChaRo-iOS/Source/Services/UserDefaultKey.swift b/ChaRo-iOS/ChaRo-iOS/Source/Services/UserDefaultKey.swift
index 69868457..c8cc53fb 100644
--- a/ChaRo-iOS/ChaRo-iOS/Source/Services/UserDefaultKey.swift
+++ b/ChaRo-iOS/ChaRo-iOS/Source/Services/UserDefaultKey.swift
@@ -6,6 +6,7 @@
 //
 
 import Foundation
+import SwiftUI
 
 extension Constants {
     struct UserDefaultsKey {
@@ -24,4 +25,17 @@ extension Constants {
         static let isKakaoLogin = "isKakaoLogin"
         static let isGoogleLogin = "isGoogleLogin"
     }
+    
+    static func removeAllUserDefaults() {
+        UserDefaults.standard.removeObject(forKey: Constants.UserDefaultsKey.userEmail)
+        UserDefaults.standard.removeObject(forKey: Constants.UserDefaultsKey.userPassword)
+        UserDefaults.standard.removeObject(forKey: Constants.UserDefaultsKey.userNickname)
+        UserDefaults.standard.removeObject(forKey: Constants.UserDefaultsKey.userImage)
+        
+        UserDefaults.standard.removeObject(forKey: Constants.UserDefaultsKey.isLogin)
+        
+        UserDefaults.standard.removeObject(forKey: Constants.UserDefaultsKey.isAppleLogin)
+        UserDefaults.standard.removeObject(forKey: Constants.UserDefaultsKey.isKakaoLogin)
+        UserDefaults.standard.removeObject(forKey: Constants.UserDefaultsKey.isGoogleLogin)
+    }
 }
diff --git a/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/MyPageScene/MyPageVC.swift b/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/MyPageScene/MyPageVC.swift
index 8cad211b..e1ec6bfb 100644
--- a/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/MyPageScene/MyPageVC.swift
+++ b/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/MyPageScene/MyPageVC.swift
@@ -18,8 +18,7 @@ class MyPageVC: UIViewController {
     let userheight = UIScreen.main.bounds.height
     var tabbarBottomConstraint: Int = 0
     
-//    var isLogin: Bool = UserDefaults.standard.bool(forKey: "isLogin") ?? true
-    var isLogin: Bool = true
+    var isLogin: Bool = UserDefaults.standard.bool(forKey: Constants.UserDefaultsKey.isLogin) ?? false
     
     private var userProfileData: [UserInformation] = []
     //var writenPostData: [MyPagePost] = []
@@ -31,7 +30,7 @@ class MyPageVC: UIViewController {
     var currentState: String = "인기순"
     
     //무한스크롤을 위함
-    var myId: String = UserDefaults.standard.string(forKey: "userId") ?? "ios@gmail.com"
+    var myId: String = UserDefaults.standard.string(forKey: Constants.UserDefaultsKey.userEmail) ?? "ios@gmail.com"
     var lastId: Int = 0
     var lastFavorite: Int = 0
     var isLast: Bool = false
diff --git a/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/SettingScene/SettingVC.swift b/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/SettingScene/SettingVC.swift
index e0a85225..e2412093 100644
--- a/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/SettingScene/SettingVC.swift
+++ b/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/SettingScene/SettingVC.swift
@@ -171,8 +171,9 @@ extension SettingVC {
     
     /// LoginSB의 루트 네비게이션 컨트롤러로 화면전환하는 메서드
     private func presentToSignNC() {
+        Constants.removeAllUserDefaults()
         guard let signNC = UIStoryboard(name: "Login", bundle: nil).instantiateViewController(withIdentifier: SignNC.className)
-                as? SignNC else {return}
+                as? SignNC else { return }
         signNC.modalPresentationStyle = .overFullScreen
         self.present(signNC, animated: true, completion: nil)
     }
@@ -302,8 +303,8 @@ extension SettingVC: UITableViewDataSource {
                 let changeImageVC = ChangeImageVC()
                 self.navigationController?.pushViewController(changeImageVC, animated: true)
             case 1:
-                let findPasswordVC = FindPasswordVC()
-                self.navigationController?.pushViewController(findPasswordVC, animated: true)
+                let changePasswordVC = ChangePasswordVC()
+                self.navigationController?.pushViewController(changePasswordVC, animated: true)
             default:
                 break
             }
diff --git a/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/SignScene/SNSLoginVC.swift b/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/SignScene/SNSLoginVC.swift
index e1dc99d4..2926b43f 100644
--- a/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/SignScene/SNSLoginVC.swift
+++ b/ChaRo-iOS/ChaRo-iOS/Source/Views/VCs/SignScene/SNSLoginVC.swift
@@ -91,6 +91,7 @@ class SNSLoginVC: UIViewController {
     
     @objc func lookAroundButtonClicked() {
         //isLogin 값을 false로 설정 - 둘러보기이므로 계정 없음
+        Constants.removeAllUserDefaults()
         UserDefaults.standard.set(false, forKey: Constants.UserDefaultsKey.isLogin)
         self.goToHomeVC()
     }
@@ -118,7 +119,14 @@ class SNSLoginVC: UIViewController {
         snsType = "G"
         GIDSignIn.sharedInstance.signIn(with: signInConfig, presenting: self) { user, error in
             guard error == nil else { return }
-            let userEmail = user?.profile?.email
+            
+            guard let userEmail = user?.profile?.email else {
+                self.makeAlert(title: "로그인 오류",
+                               message: "선택된 구글 아이디가 없습니다.")
+                return
+            }
+            
+            self.socialLogin(email: userEmail, profileImage: nil, nickname: nil)
             //여기 유저 이미지 ... String 으로 변환 모루겟다
             //            do {
             //                var userProfileImageString = try String(contentsOf: URL(string: (user?.profile?.imageURL(withDimension: 320)!)!)!)
@@ -128,7 +136,6 @@ class SNSLoginVC: UIViewController {
             //            }
             
             //로그인
-            self.socialLogin(email: userEmail!, profileImage: nil, nickname: nil)
         }
     }