Hi,

some time last year, I aquired a free datacard after buying an Acer laptop.

The data card came with a Sim card that had £20+vat credit pre-installed,

(= 10Mb worth of data, at £2+vat per Mb.)

I have now sold the data card, and am wondering;

how can I now find out how much credit remains on the Sim card?

Also,

I've been able to send text messages using the Sim in my phone,

but I'm unable to make voice calls;

is it possible to enable the Sim for voice calls?

Cheers.