If your Huawei Device is an USB modem, please follow these instructions:
If your modem software asked for an unlock code when you tried using another network's SIM card, directly enter the unlock code we sent you when prompted by the software.
Otherwise try one of the following
This method requires your PC to have a software called Hyperterminal which can be found on the Start Menu in Windows XP, 2003 and other older versions of Windows:
Start - > Programs -> Accessories - > Communications - > Hyperterminal
1.Remove all other modems, printers and other devices connected to your PC other than your monitor, keypad and mouse.
2.Start your pc, connect your USB modem and open Hyperterminal.
3.Enter any name and select any icon and click OK to continue.
4.Set Connect using to your modem port, Huawei Mobile Connect - 3G Modem or the right COM port.
5.In the properties window that opens, without changing any values, click OK to continue.
6.Type the following command(replace the word UnlockCode with the unlock code we sent you):
and press enter.
7.Your modem should now be unlocked. Close Hyperterminal, disconnect your modem and connect it again.
Use this method if Method 1 does not work or if you are not able to follow method 1.
If your PC does not have Hyperterminal or if your using Windows Vista or Windows 7 you can use the following method.
1.Download our Modem Communicator Application. This application has been scanned by Mcafee and contains no virus. For your safety, please scan the application again after you download it.
2.Switch off your PC, remove all other modems, printers and other devices connected to your PC except your monitor, keypad and mouse.
3.Start your pc, connect your USB modem and open the application you downloaded(mc.exe).
4.Click on the Check for Ports button and wait for the response.
5.Click on the Check for Modems button and wait for a response.
6.Click on the Send AT Command button and make sure you get the response "OK".
7.In the text-box next to the Send User Command button, type the following command(replace the word UnlockCode with the unlock code we sent you):
8.Click on the Send User Command button.
9.Your modem should now be unlocked. Close the application(Modem Communicator), disconnect your modem and connect it again.