diff --git a/adapters/GammuAdapter.php b/adapters/GammuAdapter.php
index da42b49..884da1f 100644
--- a/adapters/GammuAdapter.php
+++ b/adapters/GammuAdapter.php
@@ -195,7 +195,7 @@ namespace adapters;
                 'sendsms',
                 'TEXT',
                 escapeshellarg($destination),
-                '-textutf8',
+                '-text',
                 escapeshellarg($text),
                 '-validity',
                 'MAX',
@@ -338,9 +338,7 @@ namespace adapters;
             {
                 return true;
             }
-            
-            // The command returns 123 on failed execution (even if SIM is already unlocked), and returns 0 if unlock was successful
-            // We can directly return true if command was succesful
+
             $command_parts = [
                 'LC_ALL=C',
                 'gammu',
@@ -352,13 +350,8 @@ namespace adapters;
             ];
 
             $result = $this->exec_command($command_parts);
-            if (0 === $result['return'])
-            {
-                return true;
-            }
 
             //Check security status
-            // The command returns 0 regardless of the SIM security state
             $command_parts = [
                 'LC_ALL=C',
                 'gammu',