first upload all files

Modules/Sms/Resources/lang/en/messages.php

@@ -0,0 +1,8 @@
+<?php
+
+return [
+    'welcome' => "Welcome :first_name,\nYour account has been created successfully.",
+    'new_order' => 'A new order has been placed. The order id is #:order_id.',
+    'order_has_been_placed' => "Hi :first_name,\nYour order #:order_id has been placed. Thanks for shopping with us.",
+    'order_status_changed' => "Hi :first_name,\nYour order #:order_id status is changed to :status.",
+];

Modules/Sms/Resources/lang/en/services.php

@@ -0,0 +1,6 @@
+<?php
+
+return [
+    'vonage' => 'Vonage',
+    'twilio' => 'Twilio',
+];