diff --git a/lib/modem.js b/lib/modem.js
index b9ec2f2..cae5ff7 100644
--- a/lib/modem.js
+++ b/lib/modem.js
@@ -113,29 +113,6 @@ function simpleCommand(cmd, callback) {
     writeToPortAndWaitForOK(cmd);
 }
 
-/*
-async function readIMSI() {
-    logger.info('Querying IMSI');
-    const parserReadIMSI = new ParserDelimiter({ delimiter: DELIMITER_WAIT_FOR_OK });
-    parserReadIMSI.on('data', (data) => {
-        if (data) {
-            modemInfo.imsi = data.toString().trim();
-            logger.info(`IMSI: ${modemInfo.imsi}`);
-        }
-
-        mutex.releaseLockWaitForOK();
-    });
-
-    port.pipe(parserReadIMSI);
-    await writeToPortAndWaitForOK('AT+CIMI\r');
-
-    // selesai hanya jika lock sudah terbuka oleh parser
-    mutex.setLockWaitForOK();
-    port.unpipe(parserReadIMSI);
-    mutex.releaseLockWaitForCommand();
-}
-*/
-
 function readManufacturer() {
     return new Promise((resolve) => {
         simpleCommand('AT+CGMI\r', (err, result) => {