How to enter my Unlock Code on Huawei ?

1) open Hyperterminal : C:Program FilesWindows NT (should be there)
2) you must set com port on modem (Huawei Mobile Connect - 3G Modem)
3) type following command : AT^CARDLOCK="<you unlock code>"
4) Validate by pressing Enter.

Model: Huawei Ascend G300

Just insert the new Sim card you wish to use,( or any other network Sim other than what it is locked too ),the phone will then tell you it is Sim locked and ask if you want to unlock. Screen will show unlock code line press this then insert code. Phone is now permanently Sim unlocked .

Model: Mini WIFI Modem

1 Insert Non-Optus SIM card into modem
2 Power device on – wait until the device has completed it’s initialization
3 Make sure there is a connection between the WiFi Modem and the client (eg computer)
4 Start an Internet browser and enterhttp:// in the address bar. (The default password is admin).
5 Enter the password, and then click Login
6 Select Settings
7 Select Dialup and then Unlock SIM
8 Enter unlock code and then click Apply
9 Unit resets itself if successful.

How to enter code for HUAWEI E372:

Connect your HUAWEI E372 to a computer with a non accepted SIM card,
Install and run MobilePartner application,
You will se a window with a massage: "Please enter unlock code:",
Enter the code we send to you and accept it,
Your modem is now unlocked.