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diff --git a/Example/Shared/FIRSampleAppUtilities.m b/Example/Shared/FIRSampleAppUtilities.m
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+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRSampleAppUtilities.h"
+
+#import <SafariServices/SafariServices.h>
+
+// Plist file name.
+NSString *const kServiceInfoFileName = @"GoogleService-Info";
+// Plist file type.
+NSString *const kServiceInfoFileType = @"plist";
+// GOOGLE_APP_ID key
+NSString *const kGoogleAppIDPlistKey = @"GOOGLE_APP_ID";
+// Dummy plist GOOGLE_APP_ID
+NSString *const kDummyGoogleAppID = @"1:123:ios:123abc";
+// Github Repo URL String
+NSString *const kGithubRepoURLString = @"https://github.com/firebase/firebase-ios-sdk/";
+// Alert contents
+NSString *const kInvalidPlistAlertTitle = @"GoogleService-Info.plist";
+NSString *const kInvalidPlistAlertMessage = @"This sample app needs to be updated with a valid "
+                                            @"GoogleService-Info.plist file in order to configure "
+                                            @"Firebase.\n\n"
+                                            @"Please update the app with a valid plist file, "
+                                            @"following the instructions in the Firebase Github "
+                                            @"repository at: %@";
+
+@implementation FIRSampleAppUtilities
+
++ (BOOL)appContainsRealServiceInfoPlist {
+  static BOOL containsRealServiceInfoPlist = NO;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    NSBundle *bundle = [NSBundle mainBundle];
+    containsRealServiceInfoPlist = [self containsRealServiceInfoPlistInBundle:bundle];
+  });
+  return containsRealServiceInfoPlist;
+}
+
++ (BOOL)containsRealServiceInfoPlistInBundle:(NSBundle *)bundle {
+  NSString *bundlePath = bundle.bundlePath;
+  if (!bundlePath.length) {
+    return NO;
+  }
+
+  NSString *plistFilePath = [bundle pathForResource:kServiceInfoFileName
+                                             ofType:kServiceInfoFileType];
+  if (!plistFilePath.length) {
+    return NO;
+  }
+
+  NSDictionary *plist = [NSDictionary dictionaryWithContentsOfFile:plistFilePath];
+  if (!plist) {
+    return NO;
+  }
+
+  // Perform a very naive validation by checking to see if the plist has the dummy google app id
+  NSString *googleAppID = plist[kGoogleAppIDPlistKey];
+  if (!googleAppID.length) {
+    return NO;
+  }
+  if ([googleAppID isEqualToString:kDummyGoogleAppID]) {
+    return NO;
+  }
+
+  return YES;
+}
+
++ (void)presentAlertForInvalidServiceInfoPlistFromViewController:(UIViewController *)
+      viewController {
+  NSString *message = [NSString stringWithFormat:kInvalidPlistAlertMessage, kGithubRepoURLString];
+  UIAlertController *alertController =
+      [UIAlertController alertControllerWithTitle:kInvalidPlistAlertTitle
+                                          message:message
+                                   preferredStyle:UIAlertControllerStyleAlert];
+  UIAlertAction *viewReadmeAction =
+      [UIAlertAction actionWithTitle:@"View Github"
+                               style:UIAlertActionStyleDefault
+                             handler:^(UIAlertAction * _Nonnull action) {
+        NSURL *githubURL = [NSURL URLWithString:kGithubRepoURLString];
+        [FIRSampleAppUtilities navigateToURL:githubURL fromViewController:viewController];
+
+      }];
+  [alertController addAction:viewReadmeAction];
+
+  UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Close" style:UIAlertActionStyleCancel handler:nil];
+  [alertController addAction:cancelAction];
+
+  [viewController presentViewController:alertController animated:YES completion:nil];
+}
+
++ (void)navigateToURL:(NSURL *)url fromViewController:(UIViewController *)viewController {
+  if ([SFSafariViewController class]) {
+    SFSafariViewController *safariController = [[SFSafariViewController alloc] initWithURL:url];
+    [viewController showDetailViewController:safariController sender:nil];
+  } else {
+    [[UIApplication sharedApplication] openURL:url];
+  }
+}
+
+@end