Normally when you buy a new 3G internet modem from a service provider the modem will be locked to the network in order not to support or work on any other network. If you insert another network Sim card on it you would be asked to provide your unlock code all because it has been locked by the service provider. The unlock code allows you to bypass the modem in order to be able make use of another network Sim card on it.
How to get started
Firstly, you need to generate the unlock code. And how do I generate the unlock code?
You can generate the unlock code using a software called Master Unlocker.
The Master Unlocker is just like a calculator, it calculates your modem serial number and then generate an UNLOCK code which you can input on an Huawei modem to bypass it locked Network/Sim.
Download Master Unlocker Software HERE
Unzip the folder (if it come in Zip form) and then extract or double click the application named “Universal Mastercode”

Immediately you extract or double click the “Universal Mastercode”, it run itself just like your pc calculator
Bring out your Huawei modem, at the back of the modem there is a IMEI number Locate the IMEI number
On your Universal MasterCode application, Click on 'Huawei' tab, then erase the IMEI existing on the application and type in the IMEI number you found at the back of your modem And then click on “Calculate”

Immediately a result displays, copy the code/number in the “UNLOCK CODE” roll field to your notepad or write it some where.
Remove the Sim card on your Fastlink/3G Huawei internet modem and replace it with another network provider Sim card. That’s is, if your modem is MTN fastlink, remove the MTN sim card and insert Airtel, Glo or Etisalat.

Plug the modem to your PC, A message displays asking for your unlock code, Paste the code generated from you “Universal Mastercode” ( UNLOCK CODE) to the unlock code field and click on 'OK'.
You have successfully unlocked your modem!
RELATED TOPIC: CONFIGURING YOUR APN
HOW TO UNLOCK YOUR MTN, GLO, AIRTEL, ETISALAT WIFI/MIFI MODEM DEVICE
How do I configure my modem settings to make it work with all networks?
Go to your modem platform, select 'Tools' and then 'Options'. Click on 'Profile Management' and then 'New'.
After creating your APN (use the below configuration settings) then Click 'OK'
Set the settings below for your preferred network
GLO PROFILE SETTINGS
Profile Name: Glo Web
Tick on Static
APN: Gloflat
Leave others unchanged
MTN PROFILE SETTINGS
Profile Name: MTN
Tick on Static
APN: web.gprs.mtnningeria.net
Leave others unchanged
AIRTEL PROFILE SETTINGS
Profile Name: AIRTEL
Tick on Static
APN: internet.ng.airtel.com
Leave others unchanged
ETISALAT PROFILE SETTINGS
Profile Name: ETISALAT
Tick on Static
APN: Etisalat
Leave others unchanged
That’s all and you are good to go and surf the net using any of the Mobile service provider in Nigeria…
If you find it difficult unlocking your Huawei modem, feel free to drop your modem IMEI number and it model number (e.g E156G) using the comment box or via email to toyotheophilus@gmail.com and I'll generate your unlock code for you freely.
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