iPad phone number not working

[karen11]

Hello I pay monthly for my iPad and the data is working fine but have noticed the phone number is not working. Any ideas why this would be? If I ring out on it, it's dead and says I can't be connected if someone tries to ring it. I've tried adding it in the phone but asks for a pin once the text is sent to the number and of course the number does not work? I'm sure it was workign when I got the iPad/sim last year. I can see the phone number under my deivices on my O2 but I'm at a loss on how to fix it?

[MI5 · Accepted solution]

iPads and tablets have data only sims.

Calls will not work @karen11 

[karen11]

Thank you so much!!

[MI5]

You're welcome.