diff --git a/modem-tester.js b/modem-tester.js
index 708350d..efd9539 100644
--- a/modem-tester.js
+++ b/modem-tester.js
@@ -53,6 +53,8 @@ port = new SerialPort(config.modem.device, { baudRate: 115200 }, async (err) =>
         'AT&FE0\r',
         'AT+CGSN\r',
         'AT+CIMI\r',
+        'AT+CMGF=0\r',
+        'AT+CNMI=1,2,0,1,0\r',
     ];
 
     const commandsCount = commands.length;