you will get 25 free credits that means you can send 25 free SMS from any number to any number. For using it again register another mobile and email ID. 25 SMS is the limitation of this trick from one registered number. Usually people have two to three sims.
you will receive password on registered mobile number.
4. Now login with that password that you got on mobile.
5. Now go to Send SMS to number.
WARNING: Please don't use it for illegal purpose!