diff --git a/CHANGELOG-DEV.md b/CHANGELOG-DEV.md
index 244d016103..21e9ee131d 100644
--- a/CHANGELOG-DEV.md
+++ b/CHANGELOG-DEV.md
@@ -7,6 +7,7 @@ HumHub Changelog
 - Enh #6620: Marketplace: Add more module checks
 - Enh #6621: Avoid PHP error when trying to download a file without guid in the URL params (return 404 exception instead)
 - Enh #6623: Add a hint in the "Dropdown space order" settings to inform that a manual sort is always applied first
+- Enh #6628: Add self test check: "Mobile App - Push Service"
 
 1.15.0-beta.2 (October 5, 2023)
 -------------------------------
diff --git a/protected/humhub/libs/SelfTest.php b/protected/humhub/libs/SelfTest.php
index 54485d7d0e..eb5306f8da 100644
--- a/protected/humhub/libs/SelfTest.php
+++ b/protected/humhub/libs/SelfTest.php
@@ -316,22 +316,6 @@ class SelfTest
             ];
         }
 
-        // Checks GraphicsMagick Extension
-        $title = 'PHP - ' . Yii::t('AdminModule.information', '{phpExtension} Extension', ['phpExtension' => 'GraphicsMagick']);
-        if (class_exists('Gmagick', false)) {
-            $checks[] = [
-                'title' => $title,
-                'state' => 'OK'
-            ];
-        } else {
-            $checks[] = [
-                'title' => $title,
-                'state' => 'WARNING',
-                'hint' => Yii::t('AdminModule.information', 'Optional')
-            ];
-        }
-
-
         $memoryLimit = ini_get('memory_limit');
         if (preg_match('/^(\d+)(.)$/', $memoryLimit, $m)) {
             if ($m[2] == 'G') {
@@ -393,22 +377,6 @@ class SelfTest
             ];
         }
 
-        // Checks SQLite3 Extension
-        $title = 'PHP - ' . Yii::t('AdminModule.information', '{phpExtension} Support', ['phpExtension' => 'SQLite3']);
-        if (class_exists('SQLite3')) {
-            $checks[] = [
-                'title' => $title,
-                'state' => 'OK'
-            ];
-        } else {
-            $checks[] = [
-                'title' => $title,
-                'state' => 'WARNING',
-                'hint' => Yii::t('AdminModule.information', 'Optional') . ' - '
-                    . Yii::t('AdminModule.information', 'Install {phpExtension} Extension for DB Caching', ['phpExtension' => 'SQLite3'])
-            ];
-        }
-
         // Checks PDO MySQL Extension
         $title = 'PHP - ' . Yii::t('AdminModule.information', '{phpExtension} Extension', ['phpExtension' => 'PDO MySQL']);
         if (extension_loaded('pdo_mysql')) {
@@ -876,6 +844,25 @@ class SelfTest
             ];
         }
 
+        // Check Mobile App - Push Service
+        $title = $titlePrefix . Yii::t('AdminModule.information', 'Mobile App - Push Service');
+        /* @var \humhub\modules\fcmPush\Module|null $pushModule */
+        $pushModule = $modules['fcm-push'] ?? null;
+        if ($pushModule instanceof \humhub\modules\fcmPush\Module &&
+            $pushModule->isActivated &&
+            $pushModule->getGoService()->isConfigured()) {
+            $checks[] = [
+                'title' => $title,
+                'state' => 'OK'
+            ];
+        } else {
+            $checks[] = [
+                'title' => $title,
+                'state' => 'WARNING',
+                'hint' => Yii::t('AdminModule.information', '"Push Notifications (Firebase)" module and setup of Firebase API Key required')
+            ];
+        }
+
         return $checks;
     }
 }