1. How to Unlock 3G USB Modem for Free
There are two forms of 3G USB modem existed in the market, locked USB modem and unlocked
USB modem. Most of the people prefer to unlocked because unlocked USB Modem are not limited
to specific operators’ network and could use almost any SIM card all over the world. However,
most people get the 3G modem with their pre-paid plan from the operators. Sometimes, the users
may don’t want to proceed the plan and want a change, but it would be a little pity to abandon
the modem which is still good, or maybe still looks new. Then one questions come out, how to
unlocked the locked modem?
Most of people like to Google the solution, but it’s no doubt that the answers are not as good as
they wish. It may need some money to pay for the unlock code or the unlocking service. Can we
DIY unlocking? The answer is sure, we could unlock 3G USB modem for free and no need
unlocking code. The following is the steps how to unlock USB modem for free:
1. Download the newest software from http://www.dc-unlocker.com/downloads for your USB
modem. Pls note there may be different version of same modem, for example, Huawei E220
3G modem, they may be locked to Vodafone, T-mobile or Etisalat, pls make sure that to
choose the right software for your modem
2. Install the DC-unlocker Client software to your PC.
3. Plug USB modem to your PC and run the driver in modem to install.
4. Plug the “Unikey"(Unikey is a main tool to unlock modem, check the picture below for your
reference, just like that)
5. Run the DC-UNLOCKER software and select manufacturer of the USB modem
6. Click the button (In blue) to detect the model, the software could identify what USB modem
you had plug to the PC. Before that, make sure there is invalid SIM card in the modem. It
means the SIM is usable, but the modem couldn’t support it due to lock.

2. 7. After DC-UNLOCKER detect the modem, click “Unlock” under ”Unlocking”.

3. 8. If you fail in step 7, insert SIM card again and try to unlock USB modem one more time.
Someone may doubt if I don’t buy the unlocking code, then I also have to buy the “Unikey”.
Actually, the unlocking code can only supports a little part of the 3G modems nowadays, but the
Unikey is a Skeleton Key which could help unlock any 3G USB modem unlimited times, the only
disadvantage is the price, the price of a Unikey is almost as same as an USB Modem or even more
higher.
So in my opinion, get another unlocked 3G modem from online store with dozens of dollar is
better for your personal usage.