I just had a bit of a hard time trying to activate a Telecom SIM card for my mother-in-law.
The idea is that she would use one of my unlocked GSM handsets while overseas, and use a Telecom SIM card to keep receiving calls.
So she got one from the local store, after much talk - the local store didn't want to part with a SIM card without selling a phone.
Once here, I called the Telecom Roaming Help Desk to activate it - associate with her account.
The lady was really nice but she kept asking what was the number on the phone where the Telecom SIM card was to be used - and I kept saying there isn't any number on the phone since it's a GSM handset and there's no SIM card in it...
She insisted that I had to supply the old number and I kept saying no, there isn't an old number. After about ten minutes she talked to someone else, and activated the card.
By the way, the booklet accompanying the SIM card says on the last page:
"Your Telecom SIM card can be used exclusivelt in your WorldMode phone or in other SIM-enabled handsets as long as you have a Telecom post paid account.
Telecom SIM cards cannot be used in SIM-locked GSM handsets."
A bit more training on "GSM" please...