diff --git a/Client/Experiments/initial_experiments.json b/Client/Experiments/initial_experiments.json
index cc45bd348596..e819451cc854 100644
--- a/Client/Experiments/initial_experiments.json
+++ b/Client/Experiments/initial_experiments.json
@@ -62,6 +62,118 @@
       "localizations": null,
       "locales": null
     },
+    {
+      "schemaVersion": "1.12.0",
+      "slug": "set-to-default-reminder-notification-for-ios",
+      "id": "set-to-default-reminder-notification-for-ios",
+      "arguments": {},
+      "application": "org.mozilla.ios.Firefox",
+      "appName": "firefox_ios",
+      "appId": "org.mozilla.ios.Firefox",
+      "channel": "release",
+      "userFacingName": "Set to Default reminder notification for iOS",
+      "userFacingDescription": "This experiment will test a notification reminding users to set Firefox as their default browser.",
+      "isEnrollmentPaused": false,
+      "isRollout": false,
+      "bucketConfig": {
+        "randomizationUnit": "nimbus_id",
+        "namespace": "ios-messaging-release-22",
+        "start": 0,
+        "count": 10000,
+        "total": 10000
+      },
+      "featureIds": [
+        "messaging"
+      ],
+      "probeSets": [],
+      "outcomes": [
+        {
+          "slug": "default_browser",
+          "priority": "primary"
+        }
+      ],
+      "branches": [
+        {
+          "slug": "control",
+          "ratio": 1,
+          "feature": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "messaging",
+              "enabled": true,
+              "value": {
+                "messages": {
+                  "{experiment}-en": {
+                    "is-control": true,
+                    "surface": "notification",
+                    "style": "NOTIFICATION",
+                    "action": "MAKE_DEFAULT_BROWSER_WITH_TUTORIAL",
+                    "trigger": [
+                      "DAY_3_AFTER_INSTALL",
+                      "I_AM_NOT_DEFAULT_BROWSER",
+                      "ALLOWED_TIPS_NOTIFICATIONS"
+                    ],
+                    "experiment": "{experiment}"
+                  }
+                },
+                "triggers": {
+                  "DAY_3_AFTER_INSTALL": "days_since_install >= 3"
+                }
+              }
+            }
+          ]
+        },
+        {
+          "slug": "treatment-a",
+          "ratio": 1,
+          "feature": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "messaging",
+              "enabled": true,
+              "value": {
+                "messages": {
+                  "{experiment}-en": {
+                    "title": "Firefox is Fast and Private",
+                    "text": "Make Firefox your default browser",
+                    "surface": "notification",
+                    "style": "NOTIFICATION",
+                    "action": "MAKE_DEFAULT_BROWSER_WITH_TUTORIAL",
+                    "trigger": [
+                      "DAY_3_AFTER_INSTALL",
+                      "I_AM_NOT_DEFAULT_BROWSER",
+                      "ALLOWED_TIPS_NOTIFICATIONS"
+                    ],
+                    "experiment": "{experiment}"
+                  }
+                },
+                "triggers": {
+                  "DAY_3_AFTER_INSTALL": "days_since_install >= 3"
+                }
+              }
+            }
+          ]
+        }
+      ],
+      "targeting": "((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('120.!') >= 0) && (language in ['en'])))",
+      "startDate": "2024-01-23",
+      "enrollmentEndDate": null,
+      "endDate": null,
+      "proposedDuration": 43,
+      "proposedEnrollment": 14,
+      "referenceBranch": "control",
+      "featureValidationOptOut": false,
+      "localizations": null,
+      "locales": null
+    },
     {
       "schemaVersion": "1.12.0",
       "slug": "social-proof-on-ios-default-browser-onboarding-screen",