How can I stop my phone sending an SMS every time I insert a SIM card? I have one Samsung tablet and one Samsung mobile phone. When I insert my Airtel SIM in tablet then it automatically sends one SMS to an unknown number, and when I insert the same SIM card into my mobile then it again sends one SMS to an unknown number. So every time an amount is deducted from my balance.

I don't know what is the problem and how to get out from this problem?

Is it a problem with the SIM card or with the mobile/tablet?
Hey I got solution after giving lot of time on this problem.
This is the defect of Samsung Software. Actually every software version is linked with some number. But it not send any sms to that number. Because of licence, security reason they need to linked every version to particular number. If some problem occur in mobile phone then only it communicate with this number. But in some particular software there is some defect that's why it send sms when new SIM inserted into mobile.

The solution is go to your nearest Samsung Service Center and update your software.