- First you need to insert non accepted sim card (other than default sim card) in your Alcatel STC X230L modem.
- After that connect your alcatel modem to computer / laptop.
- Now software / dashboard / connection manager of your modem will open
- It will show a box to enter an unlock code ( NCK ) in your modem.
- Generate the unlock code from the below mentioned link and put into your modem.
- Now your modem will be unlocked forever.
- Now you can put any sim card on your modem and enjoy surfing the internet.
Online Alcatel Unlock Code Calculator
Update : Developer has stopped free unlock code. If want to purchase the NCK / unlock code then pay (1.50 $) and mention model with IMEI in transaction. Correct unlock code will be delivered in your mail within 8 hrs.