Thanks for the kind Information, The sim card was activated but no messages could be received. kindly instruct me how to go about it?
The iPad has no built in SMS capabilities. You can use Messages to send iMessages to other iPad, iPhone, iPod Touch users and Mac computers running Mountain Lion. There are apps such as TextFree that may do what you want.
You may also wish to take a look at the iPad manual.
If English is not your preferred language, there is a link in the upper left of that page for manuals in other languages.
Best of luck.