diff --git a/Btchap/Config/BuildSettings.swift b/Btchap/Config/BuildSettings.swift
index 32ddc2f78..e75c3b93d 100644
--- a/Btchap/Config/BuildSettings.swift
+++ b/Btchap/Config/BuildSettings.swift
@@ -173,10 +173,10 @@ final class BuildSettings: NSObject {
     
     #if DEBUG
     /// The configuration to use for analytics during development. Set `isEnabled` to false to disable analytics in debug builds.
-    static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: false,
-                                                               host: "",
-                                                               apiKey: "",
-                                                               termsURL: URL(string: "https://")!)
+    static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: true, // Tchap: enable PostHog analytics on DEBUG
+                                                               host: "https://us.i.posthog.com", // Tchap: dev posthog,
+                                                               apiKey: "phc_eQOeaQiaIxdX9kaQmqYTD7RJLyFubYmGYKUI9czqqQD", // Tchap: dev posthog,
+                                                               termsURL: URL(string: "https://tchap.beta.gouv.fr/politique-de-confidentialite")!) // Tchap: dev posthog,
     #else
     /// The configuration to use for analytics. Set `isEnabled` to false to disable analytics.
     static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: false,
diff --git a/DevTchap/Config/BuildSettings.swift b/DevTchap/Config/BuildSettings.swift
index 08f236910..9798d0917 100644
--- a/DevTchap/Config/BuildSettings.swift
+++ b/DevTchap/Config/BuildSettings.swift
@@ -174,10 +174,10 @@ final class BuildSettings: NSObject {
     
     #if DEBUG
     /// The configuration to use for analytics during development. Set `isEnabled` to false to disable analytics in debug builds.
-    static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: false,
-                                                               host: "",
-                                                               apiKey: "",
-                                                               termsURL: URL(string: "")!)
+    static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: true, // Tchap: enable PostHog analytics on DEBUG
+                                                               host: "https://us.i.posthog.com", // Tchap: dev posthog,
+                                                               apiKey: "phc_eQOeaQiaIxdX9kaQmqYTD7RJLyFubYmGYKUI9czqqQD", // Tchap: dev posthog,
+                                                               termsURL: URL(string: "https://tchap.beta.gouv.fr/politique-de-confidentialite")!) // Tchap: dev posthog,
     #else
     /// The configuration to use for analytics. Set `isEnabled` to false to disable analytics.
     static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: false,
diff --git a/Riot/Modules/Analytics/Analytics.swift b/Riot/Modules/Analytics/Analytics.swift
index 3b19c9809..22343098c 100644
--- a/Riot/Modules/Analytics/Analytics.swift
+++ b/Riot/Modules/Analytics/Analytics.swift
@@ -50,7 +50,9 @@ import AnalyticsEvents
     /// Whether to show the user the analytics opt in prompt.
     var shouldShowAnalyticsPrompt: Bool {
         // Only show the prompt once, and when analytics are enabled in BuildSettings.
-        !RiotSettings.shared.hasSeenAnalyticsPrompt && BuildSettings.analyticsConfiguration.isEnabled
+        // Tchap: always return FALSE because user already agreed about analytics in the private policy
+//        !RiotSettings.shared.hasSeenAnalyticsPrompt && BuildSettings.analyticsConfiguration.isEnabled
+        false
     }
     
     /// Indicates whether the user previously accepted Matomo analytics and should be shown the upgrade prompt.
diff --git a/Riot/Modules/Application/LegacyAppDelegate.m b/Riot/Modules/Application/LegacyAppDelegate.m
index 99fe7fcc5..ae34bcb44 100644
--- a/Riot/Modules/Application/LegacyAppDelegate.m
+++ b/Riot/Modules/Application/LegacyAppDelegate.m
@@ -480,7 +480,9 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
     profiler.analytics = analytics;
     [MXSDKOptions sharedInstance].profiler = profiler;
     
-    [analytics startIfEnabled];
+    // Tchap: Don't try to start analytics here.
+    // Wait to have MXSession initialized in `handleAppState` method.
+//    [analytics startIfEnabled];
 
     self.localAuthenticationService = [[LocalAuthenticationService alloc] initWithPinCodePreferences:[PinCodePreferences shared]];
     
@@ -2551,6 +2553,24 @@ - (void)handleAppState
             // An observer has been set in didFinishLaunching that will call the stored block when ready
             self.roomListDataReadyCompletion = finishAppLaunch;
         }
+        
+        // Tchap: handle analytics start now that a MXSession is known.
+        // Check classes with `object_getClass` function because they are `id` conforming to protocols and not direct objects.
+        if (object_getClass(MXSDKOptions.sharedInstance.profiler) == MXBaseProfiler.class &&
+            object_getClass(((MXBaseProfiler *)MXSDKOptions.sharedInstance.profiler).analytics) == Analytics.class)
+        {
+            Analytics *analytics = (Analytics *)((MXBaseProfiler *)MXSDKOptions.sharedInstance.profiler).analytics;
+#if DEBUG
+            // Tchap: Force analytics acceptance in DEBUG mode
+            //        `optInWith:` calls `startIfEnabled`
+            [analytics optInWith:mainSession];
+#else
+            // Tchap: start analytics as it was done in `application:didFinishLaunchingWithOptions:`
+            [analytics startIfEnabled];
+#endif
+        }
+        
+
     }
 }
 
diff --git a/Tchap/Config/BuildSettings.swift b/Tchap/Config/BuildSettings.swift
index ee36bd4db..a8481355e 100644
--- a/Tchap/Config/BuildSettings.swift
+++ b/Tchap/Config/BuildSettings.swift
@@ -203,10 +203,10 @@ final class BuildSettings: NSObject {
     
     #if DEBUG
     /// The configuration to use for analytics during development. Set `isEnabled` to false to disable analytics in debug builds.
-    static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: false,
-                                                               host: "",
-                                                               apiKey: "",
-                                                               termsURL: URL(string: "https://")!)
+    static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: true, // Tchap: enable PostHog analytics on DEBUG
+                                                               host: "https://us.i.posthog.com", // Tchap: dev posthog,
+                                                               apiKey: "phc_eQOeaQiaIxdX9kaQmqYTD7RJLyFubYmGYKUI9czqqQD", // Tchap: dev posthog,
+                                                               termsURL: URL(string: "https://tchap.beta.gouv.fr/politique-de-confidentialite")!) // Tchap: dev posthog,
     #else
     /// The configuration to use for analytics. Set `isEnabled` to false to disable analytics.
     static let analyticsConfiguration = AnalyticsConfiguration(isEnabled: false,
diff --git a/changelog.d/1078.change b/changelog.d/1078.change
new file mode 100644
index 000000000..5e4f71be0
--- /dev/null
+++ b/changelog.d/1078.change
@@ -0,0 +1 @@
+Activation de l'analytics PostHog en version Debug
\ No newline at end of file