Saturday, May 21, 2011

How to use some other SIM on BSNL 3G Teracom DATACARD

The LW272 and LW273 3G data-cards of BSNL do not support any other SIM.
On inserting any other Sim it says "Invalid Sim. Data-card will close"

Here is an method by which you can use any other SIM on BSNL 3G Data.
Just Follow the following steps*.

1. Go to Registry edit (Run-> regedit )
2. Search for Linktop3G.
3. In options of Linktop3G. you will see an engineer key. Open it and change its key to 0 from 1 ( by doing this, your data-card will not close on inserting some other Sim)

4.Here I m using Airtel SIM for demonstration. Now make new settings in connection option. for airtel use apn as

5. Now search for the Airtel network. As soon as u get the network.
6. Open the network sharing from control panel. Make a new Dial up connection
7. Use *99# as dialing number . Leave rest options as blank.
8. By following all these steps. You will be connected to internet.

* I m not responsible for any kind of harm happens to your computer or data-card by this steps. Do at it your own risk.


  1. its not working in LW273 version 1.2
    plzzz help me.

  2. The given trick is good for using the another sim in bsnl data card. To do the bsnl online payment, we can go to the sites of online recharge. The online recharge plans of the Bsnl is also very easy and affordable for us.

  3. Thanks for sharing information.
    Videocon offers one of the best postpaid prepaid service in punjab.