Google Play Services Authentication issue?

@VIPINSIRWANI, can you explain your test case? OnGUI can be called multiple times per frame, are you mashing the Authenticate button? Does the variable str get displayed in the UI, how do you know it failed, in success you explicitly output to the console for validation, but not in the case of failure.

yes sure i am using this code : -

 using UnityEngine;
 using System.Collections;
 using GooglePlayGames;
 using UnityEngine.SocialPlatforms;
 public class Call : $$anonymous$$onoBehaviour
 {
         public GUIText $$anonymous$$essage;
         private string str;
         
         // Use this for initialization
         void Start ()
         {
                 PlayGamesPlatform.Activate ();
     
         }
     
         // Update is called once per frame
         void Update ()
         {
                 $$anonymous$$essage.text = str;
         }
         void OnGUI ()
         {
                 if (GUI.Button (new Rect (10, 10, 80, 60), "Authenticate")) {
                         // authenticate user:
                         PlayGamesPlatform.Activate ();
                         str = "Clicked......";
                         Social.localUser.Authenticate ((bool success) => {
                                 if (success) {
                                         str = "Success...";
                                         Debug.Log ("Success...");
                                 } else
                                         str = "Fail.....";
                                 // handle success or failure
                         });
                 }
         }
 }

Str is always printing Fail.

Try turning on the debug log:

 GooglePlayGames.OurUtils.DebugLogEnabled = true;

GooglePlayGames.OurUtils class on github

When the debug log is enabled, depending on the error/exception, you may get a useful output to the unity console.

I am getting a similar problem, the GooglePlayServices is activating but not authenticating here is the console with the Debug messages: http://imgur.com/PjerSbT I have tried calling ShowAchievementsUI in both an ingame button and in the start function and gain the same result.

@$$anonymous$$attCCG - from your log it is looks like it using the DummyClient, which is what is used in the editor. The play game services do not work off-device.