diff --git a/Example/Auth/Sample/MainViewController+OAuth.m b/Example/Auth/Sample/MainViewController+OAuth.m
index 88c39942c22..c6a36019458 100644
--- a/Example/Auth/Sample/MainViewController+OAuth.m
+++ b/Example/Auth/Sample/MainViewController+OAuth.m
@@ -29,6 +29,10 @@ - (StaticContentTableViewSection *)oAuthSection {
   return [StaticContentTableViewSection sectionWithTitle:@"OAuth" cells:@[
     [StaticContentTableViewCell cellWithTitle:@"Sign in with Google"
                                        action:^{ [weakSelf signInGoogleHeadfulLite]; }],
+    [StaticContentTableViewCell cellWithTitle:@"Link with Google"
+                                       action:^{ [weakSelf linkWithGoogleHeadfulLite]; }],
+    [StaticContentTableViewCell cellWithTitle:@"Reauthenticate with Google"
+                                       action:^{ [weakSelf reauthenticateWithGoogleHeadfulLite]; }],
     [StaticContentTableViewCell cellWithTitle:@"Sign in with Twitter"
                                        action:^{ [weakSelf signInTwitterHeadfulLite]; }],
     [StaticContentTableViewCell cellWithTitle:@"Sign in with GitHub"
@@ -75,6 +79,68 @@ - (void)signInGoogleHeadfulLite {
   }];
 }
 
+- (void)linkWithGoogleHeadfulLite {
+  FIROAuthProvider *provider = self.googleOAuthProvider;
+  provider.customParameters = @{
+                                @"prompt" : @"consent",
+                                };
+  provider.scopes = @[ @"profile", @"email", @"https://www.googleapis.com/auth/plus.me" ];
+  [self showSpinner:^{
+    [[AppManager auth].currentUser linkWithProvider:provider
+                                         UIDelegate:nil
+                                         completion:^(FIRAuthDataResult *_Nullable authResult,
+                                                      NSError *_Nullable error) {
+     [self hideSpinner:^{
+       if (error) {
+         [self logFailure:@"Reauthenticate with provider (Google) failed" error:error];
+       } else if (authResult.additionalUserInfo) {
+         [self logSuccess:[self stringWithAdditionalUserInfo:authResult.additionalUserInfo]];
+         if (self.isNewUserToggleOn) {
+           NSString *newUserString = authResult.additionalUserInfo.newUser ?
+           @"New user" : @"Existing user";
+           [self showMessagePromptWithTitle:@"New or Existing"
+                                    message:newUserString
+                           showCancelButton:NO
+                                 completion:nil];
+         }
+       }
+       [self showTypicalUIForUserUpdateResultsWithTitle:@"Link Error" error:error];
+     }];
+   }];
+  }];
+}
+
+- (void)reauthenticateWithGoogleHeadfulLite {
+  FIROAuthProvider *provider = self.googleOAuthProvider;
+  provider.customParameters = @{
+                                @"prompt" : @"consent",
+                                };
+  provider.scopes = @[ @"profile", @"email", @"https://www.googleapis.com/auth/plus.me" ];
+  [self showSpinner:^{
+    [[AppManager auth].currentUser reauthenticateWithProvider:provider
+                                                   UIDelegate:nil
+                                                   completion:^(FIRAuthDataResult *_Nullable authResult,
+                                                                NSError *_Nullable error) {
+     [self hideSpinner:^{
+       if (error) {
+         [self logFailure:@"Link with provider (Google) failed" error:error];
+       } else if (authResult.additionalUserInfo) {
+         [self logSuccess:[self stringWithAdditionalUserInfo:authResult.additionalUserInfo]];
+         if (self.isNewUserToggleOn) {
+           NSString *newUserString = authResult.additionalUserInfo.newUser ?
+           @"New user" : @"Existing user";
+           [self showMessagePromptWithTitle:@"New or Existing"
+                                    message:newUserString
+                           showCancelButton:NO
+                                 completion:nil];
+         }
+       }
+       [self showTypicalUIForUserUpdateResultsWithTitle:@"Reauthenticate Error" error:error];
+     }];
+   }];
+  }];
+}
+
 - (void)signInTwitterHeadfulLite {
   FIROAuthProvider *provider = self.twitterOAuthProvider;
   [self showSpinner:^{
diff --git a/Firebase/Auth/Source/Public/FIRUser.h b/Firebase/Auth/Source/Public/FIRUser.h
index 5055ea64531..e0df1b1ee6b 100644
--- a/Firebase/Auth/Source/Public/FIRUser.h
+++ b/Firebase/Auth/Source/Public/FIRUser.h
@@ -18,6 +18,7 @@
 
 #import "FIRAuth.h"
 #import "FIRAuthDataResult.h"
+#import "FIRAuthUIDelegate.h"
 #import "FIRUserInfo.h"
 
 @class FIRAuthTokenResult;
@@ -269,6 +270,20 @@ DEPRECATED_MSG_ATTRIBUTE( "Please use reauthenticateWithCredential:completion: f
                          " Objective-C or reauthenticate(withCredential:completion:)"
                          " for Swift instead.");
 
+/** @fn reauthenticateWithProvider:UIDelegate:completion:
+    @brief Renews the user's authentication using the provided auth provider instance.
+
+    @param provider An instance of an auth provider used to initiate the reauthenticate flow.
+    @param UIDelegate Optionally an instance of a class conforming to the FIRAuthUIDelegate
+        protocol, this is used for presenting the web context. If nil, a default FIRAuthUIDelegate
+        will be used.
+    @param completion Optionally; a block which is invoked when the reauthenticate flow finishes, or
+        is canceled. Invoked asynchronously on the main thread in the future.
+ */
+- (void)reauthenticateWithProvider:(id<FIRFederatedAuthProvider>)provider
+                        UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                        completion:(nullable FIRAuthDataResultCallback)completion;
+
 /** @fn getIDTokenResultWithCompletion:
     @brief Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
 
@@ -359,6 +374,20 @@ DEPRECATED_MSG_ATTRIBUTE("Please use linkWithCredential:completion: for Objectiv
 - (void)linkWithCredential:(FIRAuthCredential *)credential
                 completion:(nullable FIRAuthDataResultCallback)completion;
 
+/** @fn linkWithProvider:UIDelegate:completion:
+    @brief link the user with the provided auth provider instance.
+
+    @param provider An instance of an auth provider used to initiate the link flow.
+    @param UIDelegate Optionally an instance of a class conforming to the FIRAuthUIDelegate
+        protocol, this is used for presenting the web context. If nil, a default FIRAuthUIDelegate
+        will be used.
+    @param completion Optionally; a block which is invoked when the link flow finishes, or
+        is canceled. Invoked asynchronously on the main thread in the future.
+ */
+- (void)linkWithProvider:(id<FIRFederatedAuthProvider>)provider
+              UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+              completion:(nullable FIRAuthDataResultCallback)completion;
+
 /** @fn unlinkFromProvider:completion:
     @brief Disassociates a user account from a third-party identity provider with this user.
 
diff --git a/Firebase/Auth/Source/User/FIRUser.m b/Firebase/Auth/Source/User/FIRUser.m
index 781c897ecdd..d91b90440fe 100644
--- a/Firebase/Auth/Source/User/FIRUser.m
+++ b/Firebase/Auth/Source/User/FIRUser.m
@@ -36,6 +36,7 @@
 #import "FIREmailAuthProvider.h"
 #import "FIREmailPasswordAuthCredential.h"
 #import "FIREmailLinkSignInRequest.h"
+#import "FIRFederatedAuthProvider.h"
 #import "FIRGameCenterAuthCredential.h"
 #import "FIRGetAccountInfoRequest.h"
 #import "FIRGetAccountInfoResponse.h"
@@ -791,6 +792,17 @@ - (void)reauthenticateAndRetrieveDataWithCredential:(FIRAuthCredential *) creden
   });
 }
 
+- (void)reauthenticateWithProvider:(id<FIRFederatedAuthProvider>)provider
+                        UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                        completion:(nullable FIRAuthDataResultCallback)completion {
+  [provider getCredentialWithUIDelegate:UIDelegate
+                             completion:^(FIRAuthCredential *_Nullable credential,
+                                          NSError *_Nullable error) {
+                               [self reauthenticateWithCredential:credential
+                                                       completion:completion];
+                             }];
+}
+
 - (nullable NSString *)refreshToken {
   __block NSString *result;
   dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
@@ -1234,6 +1246,17 @@ - (void)linkAndRetrieveDataWithCredential:(FIRAuthCredential *)credential
   });
 }
 
+- (void)linkWithProvider:(id<FIRFederatedAuthProvider>)provider
+              UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+              completion:(nullable FIRAuthDataResultCallback)completion {
+  [provider getCredentialWithUIDelegate:UIDelegate
+                             completion:^(FIRAuthCredential *_Nullable credential,
+                                          NSError *_Nullable error) {
+                               [self linkWithCredential:credential
+                                             completion:completion];
+                             }];
+}
+
 - (void)unlinkFromProvider:(NSString *)provider
                 completion:(nullable FIRAuthResultCallback)completion {
   [_taskQueue enqueueTask:^(FIRAuthSerialTaskCompletionBlock _Nonnull complete) {