How to use use any sim without unlocking your modem/dongle. (Trick)

1. Insert any sim in your modem and connect to pc (modem drivers/software should be installed)

2. It will show something like ‘Invalid sim’ or similar.
3. Ignore it and close the modem software.
4. Now open Nokia PC Suite. If you dont have Nokia PC Suite then download it from here.
 
5. Now click on Internet option.

6. Now go to configure and select your data card modem and make your operator settings as if you are using a nokia phone.

7. After configuring, connect to the Internet via PC Suite.
You will find that your internet is now connected.