Factory SIM unlock code of Alcatel L855 is available, means permanent unlocking of Alcatel L855 is possible using a correct NCK code. We can unlock all Alcatel-Modem easily by IMEI. There is no need to change the firmware to unlock it if the modem/router prompts for unlock code after changing the sim card. Unlocking of Alcatel L855 by code is the recommended method as you will not loose the warranty of the modem. It is the fastest and secure method to unlock the device by IMEI code. The unlocked dongle can be used with all networks sim card around the world.
To unlock your modem/router, we need only 15-digits IMEI. You can find the 15-digit correct IMEI from the settings of the device.
Unlocking of the Alcatel L855 by code is a recommended method by manufacturer. Since the unlock code comes from manufacturer database, it will unlock your modem/router 100%.