diff --git a/admin/DashboardController.php b/admin/DashboardController.php
index 684eddc..cd64f6e 100644
--- a/admin/DashboardController.php
+++ b/admin/DashboardController.php
@@ -989,10 +989,17 @@ HTML;
         $isEdit = $id > 0;
         $company = $isEdit ? CompanyRepository::findById($id) : null;
 
+        // For new companies, default phone_number_id to the shared value already in use
+        $defaultPhoneNumberId = '';
+        if (!$isEdit) {
+            $r = db()->query("SELECT phone_number_id FROM companies WHERE phone_number_id != '' LIMIT 1")->fetch();
+            $defaultPhoneNumberId = $r ? (string)$r['phone_number_id'] : env('WHATSAPP_DEFAULT_PHONE_NUMBER_ID', '');
+        }
+
         $cv = fn(string $k, string $d = '') => self::h($company[$k] ?? $d);
         $name              = $cv('name');
         $display_name      = $cv('display_name');
-        $phone_number_id   = $cv('phone_number_id');
+        $phone_number_id   = $isEdit ? $cv('phone_number_id') : self::h($defaultPhoneNumberId);
         $display_phone     = $cv('display_phone');
         $api_base_url      = $cv('api_base_url');
         $api_key           = $cv('api_key');