Pay as you Go.

I have just topped up my PAYGO phone but I can’t make calls or send SMS.  I can use data though. Do I **have** to have a ‘Call Plan’ in order to make calls and/or send SMS?  I’m sure I didn’t originally need one, I just topped up and then I could make calls etc.  Can anyone explain this to me please.

Hi,I’m leaving the UK for a few months and won’t be able to use my UK iD mobile allowance. I’m on a 1-month contract but don’t want to lose my number. How do I convert it to a PAYG SIM so I can just add bundles to it when I get back to the UK?Thanks,Andrew

Hi All, how long does ID Mobile PAYG SIM top up last, is it just one month? Or is it still available in subsequent months if not used?